In Minneapolis, a surge of ICE raids—targeting both undocumented and U.S. citizens—has sparked widespread fear, violence, and community disruption. Protesters have witnessed federal agents using tear gas and live ammunition, with reports of direct spraying into the eyes and injuries to civilians, including children. The science behind tear gas reveals it activates pain and inflammatory receptors in the eyes and skin, causing symptoms like blindness, coughing, vomiting, and long-term health concerns such as gastrointestinal and menstrual issues. Research indicates these effects extend beyond immediate reactions, with lasting mental health impacts and even intergenerational consequences, such as lower birth weights in Latino infants following raids. Studies also show that ICE enforcement undermines public safety by discouraging community reporting of crimes and eroding trust in police and healthcare. Despite claims that raids reduce crime, evidence shows immigrants are far less likely to commit offenses, and ICE arrests now target far more non-criminals than before. The combination of excessive force, trauma, and systemic distrust suggests that these actions not only violate basic rights but also harm physical and mental well-being across entire communities. Scientists and researchers emphasize a critical lack of studies on real-world exposure, especially among vulnerable populations, calling for urgent ethical and scientific scrutiny.
Hi, I'm Rose Rimler, filling in for Wendy Sogramman, and you're listening to science versus. Today, we're talking about tear gas, and we're talking about ice raids, and what they do to people, according to science. And we're talking about this stuff because of what's going on in Minneapolis and the US right now. A few weeks ago, the US government sent in a bunch of immigration and customs enforcement agents to the city. They called it, quote, the largest immigration operation ever. There's border patrol agents involved too. And we're hearing about all kinds of people being detained in all kinds of ways. New video shows a grandfather walked out of his home wearing just a blanket, shorts, and slippers during our bitter cold blast. His family says he's a US citizen. A local school district who's sounding alarms, they say about four of their students take it into ice custody. The family's attorney and school officials say ice used a five-year-old boy to knock on the door of his own home to lure out other family members. And for weeks, Minnesotans have been pushing back. They're organizing marches and protests, taking video of what these agents are doing, and federal agents have cracked down violently on all this. There's reports and video of them using tear gas and smoke on crowds. Images of agents spraying people directly in the eyes with this stuff. And they've shot three people in Minneapolis so far, killing two of them. The government has said that the people they've killed pose some kind of threat to their agents. Though the evidence and videos from the scene, don't back that up. We talked to some folks who have been there, including this guy that we're going to call T, who's lived in Minneapolis for more than a decade. We talked to him on the 24th, the day that agents killed a protester named Alex Prety. I woke up to a bunch of honking and helicopter noises out of my apartment. So I looked at my phone and saw all the updates. This man was killed just a few blocks away from where T lives. There was the day after a big general strike in Minneapolis. We just had a huge economic shutdown last yesterday. Everything was shut down. These people showed up downtown and then the next day they murdered a man like I don't know what we're supposed to do anymore. T told us about what he's witnessed in the city these past few weeks. He's joined several protests and he has seen things escalate. I hate to use the term that people always use it. Oh, it's a war zone, it's a war zone, but it really felt like that. It's really jarring to walk around your community and seeing people screaming, blowing their waffles and then just clouds of f***ing tear gas. There's shooting people too. It does honestly feel like a dystopian war zone. So today we're going to talk about what's happening there. We're going to dive into some science around tear gas, which scientists are looking at because it's not just Minneapolis. The stuff is being used on people all over the world and we're starting to find out more about what it might be doing to us, like what the long term effects could be. Plus, we'll talk about immigration reigns themselves and what they can do to people in the community. That is all coming up after the break. Welcome back, this is Rose Rimmler and today we're talking about the stuff that people are getting exposed to amid this huge influx of ICE agents in Minneapolis. And I'm here for this part of the episode with our editor, Blithe Tarell. Hi, Blithe. Hey, Rose. So I think we should probably say out of the gate that in the U.S., we've all got the right to protest. We've got the right to peacefully assemble, it's in the Constitution. And people are allowed to film stuff that's going on in public, like what police officers or ICE agents or other federal agents are doing, as long as you don't interfere with what they're up to. Right. So the Department of Homeland Security has said it's protecting its agents from rioters. All the reports are that things are generally peaceful. But what we've been seeing happening in Minneapolis is a lot of force, a lot of hardcore responses from these agents. Right. There's lots of reports of ICE using tear gas against people who are protesting or who are just like observing, taking video and stuff. And we also heard that from T, who is one of the protesters we talked to, who you heard from at the beginning of the show. They definitely unloaded a lot of tear gas out there. Were you exposed to it? Oh, yeah. Yeah. No, I was puking and throwing up all over myself. You were puking and throwing up. A lot of people were wretching. There were people out there that were prepared for it. They had gas masks and stuff. Obviously, they were handling it better, but there were also people just like, yes, straight up. We were all just coughing and tuking and micening. My whole face was covered in mucus. So yeah, I mean tear gas, it turns out can do a lot of messed up stuff, which is the first thing we're going to kind of talk about. And this has come up on the show before actually. We talked about it back in 2020. It was the height of COVID. And people were protesting after police officer murdered George Floyd, who's a black man. So Minneapolis. Yeah. Also Minneapolis, right? That's interesting. Yeah. And that is actually also when this scientist that we're starting with got interested in tear gas. So my name is Jennifer Brown. I have a PhD in neuroscience and a lot of degree from the University of Minnesota. So Jennifer was actually getting her PhD in Minneapolis at the time. And she and her like neuroscience nerd grad friends. They were watching these protests around George Floyd's death and, you know, they were seeing these like clouds of tear gas and developing protesters. And they decided that they wanted to do something. And talking amongst ourselves, we said, well, we're in we're PhD candidates where we know how to research. We know how to write. What do we know about tear gas? It started as a conversation among friends. Yeah. So Rose, like many conversations among friends. This led to them doing a bunch of research and looking at academic papers. And, you know, what they wanted to find out was, yeah, what do we know about tear gas? And one thing that caught their attention pretty early on is just a little bit about the history of this stuff because, you know, tear gas has been around kind of in some form for more than a century. So it was first documented in Warren, World War One. I think people, most people remember their high school history class is talking about mustard gas and the trenches and how terrible that was. Someone in the global community pretty quickly realized that escalating chemical warfare was a really bad idea for everybody. And so there's a convention against the use of chemical weapons. And war has a lot of signatories. The US is one of them. So the US is illegal to use tear gas and other chemical weapons in war. However, there is an exception for domestic policing. So we can't use it on enemies in wartime, but cool to use it against our own people in peacetime. Yeah. Over again. Yep. That's the system that we have. Yeah. No notes. Continue. No notes. Right. And I mean, look. I asked Jennifer about that too, right? I mean, what did you think when you saw that piece of it? Horrified. And then I said, why? Yeah. And Jennifer actually told me that after the US and all these countries agreed not to use these types of chemicals in war, it wasn't like everyone just like dumped out all of their chemicals. You know, these various things that they might use as weapons as these types of weapons, right? It's not like everybody just tossed it. But these chemicals that we had started being marketed as like non lethal or less lethal options for stuff like crowd control. And then they started getting sold to places like police departments. You know, sometimes it's okay to waste stuff. You don't have to repurpose every little thing. Right. Just accept the sunk cost of the development of an item. Yeah. So I mean, that's kind of where that's sort of like the origin story of some of this stuff. And now I want to talk a little bit about what this tear gas is. You know, what we have out there on the streets today. What it can actually do to you. Tear gas is an umbrella term. Most of these chemicals, first off, are not gases. They are chemicals that exist in solid form that are then aerosolized and made into a form that can be widely dispersed and sprayed. And to do that, you usually mix them with a lot of other chemicals or you put some kind of accelerant. You have to get it from a solid form into a gas form somehow. Yeah. So like she said, solid stuff, sort of squishing the canisters can then get fired out into crowds. And really says this aerosol. We talked to another protester about this in Minneapolis. We're going to call her a and she told us what it's like to sort of see these canisters kind of all around you in the street. If they're just launching tear gas out of left and right on the streets with no warning, even just be standing there protesting silently, peacefully. However, they're just running up and throwing whatever they have. Yeah. I mean, an A actually sent me some photos where it's just like this, you can see sort of this massive cloud just kind of hovering between buildings. And some of that could be smoke. Like there's also reports of like just smoke and not tear gas. But there's obviously like all of this stuff in the air. And I asked her like, you know, if they can get away from it. You were in a cloud. There was no running. The wind was going everywhere. You weren't running to get out of it and thank God a few.
you were those businesses were open and helping people and like escorting us inside 'cause you weren't out running it in a reasonable amount of time. It was several steady blocks wide. - Mm-hmm, it's very scary, yeah, totally. And I also asked Jennifer a little bit more just about like how it feels exactly. If I get hit with tear gas, what happens? - Yes, so do you cook with hot peppers ever make chili, jalapeno? Have you ever forgotten to wash your hands after you cut a pepper and accidentally touch your eyes or your nose and all of a sudden you feel this burning, itching eye running, it's not dripping down your face sensation. - Maybe. - Or maybe. - Maybe. - Just making Jennifer. - Maybe, maybe we've all done this, maybe. That is a similar type of reaction as what it would feel like to be exposed to tear gas because the chemicals, again the broad umbrella of tear gas are activating the same receptors, the pain receptors in your body as that chemical that's in the jalapeno just keeps asin. - So yeah, I mean, of course getting it supposed tear gas feels worse than that, like stronger. It's also not only that T, the other protester we talked to, the one we heard from at the top, he said that you can also kind of feel like this grittiness when it hits you. It felt sticky, I don't know, like it felt like there was like dust or whatever in my eyes. It was physical thing, it was scratchy. - And so to go into the sort of more of what's inside this gritt, this powder, there are a bunch of different chemicals that can be used in tear gas, like active chemicals. So one common one is known as CS. There's one that's called CN, something called OC and pepper spray. So these are the ingredients that make your eyes hurt. - Yeah, this is like the stuff that can cause that peppery feeling that Jennifer was talking about and the tearing up. But one thing that is tricky is that Jennifer said that it's really tough to know exactly what's getting used on people. And when I talk to T on Saturday, here's what he told me. - Whatever they're using today is really bad. - Really? - So yeah. - It feels worse. - Yeah, yeah, definitely. - How so? - I mean, the blindness straight up couldn't see. Like I've been tear gas before and been able to squint and whatever all this, I genuinely couldn't see. And I was scared that I was losing my visibility. - Yeah, I mean, I asked him for how long. He said it was like seven or eight minutes before he could see again. - That's a long time. - Yeah, he had people help them sort of pouring water in his eyes and stuff. And we don't really know if it was like worse for him that time because the chemical was stronger or the chemical was different. It's possible that he was like closer to it. I was like exposed in a different way. You know, we don't know. And we did reach out to ICE to ask them like what they're using on the ground and didn't hear back from them. But basically we know this stuff can cause, you know, the symptoms we're talking about, the tearing up, the coughing, even maybe vomiting. You know, there's reports it can affect your heart, your lungs. And T told us that where it hits his skin, it can feel like it's burning almost. And A told us that it almost feels like a rash. - When it gets on your skin, right? It's almost like an allergic reaction. It's things, it burns. It's not just tear gas. It's like a light acid almost being thrown at you. And that's not even the worst part. It's when it gets in your lungs and your eyes. - And then there was several photos of people getting tear gas directly in the eyes like the canisters being sprayed into their face. Did we know anything about that? - Yeah, I mean, not a ton. So, you know, you can sort of intuit, right? That like you're getting sprayed super close. There's a ton of it in your eyes. Like you get into it. - It's bad, that's a few worse. - But yeah. But I don't think we just have a ton of research, scientific research on that, that we know for sure. - Mm-hmm. - Okay, so I'm gonna talk a little bit about like the actual mechanism of why this cause is pain in our body. - Okay. - Yeah. So, the stuff when it gets sprayed, these chemicals, they combine to these proteins on our body in places like our eyes and our skin. And that can then send a message to our brain that's interpreted as pain. And particularly that, you know, can be interpreted as heat and pain. I talked about some of these details with Carly Tottis. She is a neuroscientist and she's also one of Jennifer's co-authors. - When we're talking physiologically, so when you're exposed to tear gas, what it is activating is your NOSA receptors. - Essentially your NOSA receptors are the receptors that are in your skin and they're also in your organs. And they communicate to your brain that either damage has occurred or might occur. - Mm-hmm. - So the little warning, little alarm bells are going off. - Yes, exactly. They're little alarm bells. And so, NOSA receptors are really responsive to a lot of different modalities. So they can basically take in a bunch of different types of sensations. - Exactly. - And they communicate it to your brain so that you kind of know, right, that I've cut myself, which is different from walking into a door frame, which is different from burning myself on a stove. - And it turns out that the receptor, this particular receptor, we've got a bunch of them in our NOS and in our throat and the places where we're often encountering to your gas. So it can get really bad. It can also cause a bunch of inflammation like this big immune response in your body. Here is Jennifer talking about that. - So that's causing swelling in your throat and your NOS. What happens when those things swell? They shut and you can't breathe. And you have people coughing and coughing. There have also been reports of people being in like, really tight spaces with this stuff, with this to your gas. Even babies, there was a story about a family, they said they were in their car and that agents rolled a tear gas canister under the car and it went off and it like filled up their car. They had multiple kids in there, including a six month old baby. And the baby was having trouble breathing. They had to give CPR, they had to go to the hospital. - Oh my God. - So I asked Jennifer about that. - These are not meant to be used in a closed-facus because there will be no good air left to breathe. So deaths have been reported if you aren't left too long in a closed-face with tear gas, you can die. - But this like speaks to one of the other things that Jennifer pointed out about tear gas. So there's a lot of science that we just don't have. And that's partly because a lot of the studies of like tear gas is effects on people are from people in the military who are exposed as a part of training. So like that's likely to be a particular group of people, young, healthy, probably predominantly dudes. - Not six month old babies. - Right. In fact, I mean, there's just so much we don't know about this stuff. Like we have some data on how much it takes to kill animals in the lab with these chemicals. But there's a ton that we don't know about like what it does to people, which is actually the main focus of one of the papers that Jennifer and our colleagues ended up writing. It's about whether tear gas can affect you over the long term because there's this idea that you get tear gas, it feels terrible, you have these awful symptoms in the moment. But a few hours later, you know, you like start to feel better, you recover from that stuff, right? But some research is suggesting that, you know, that's not always true. I mean, for one thing, people get hit with these canisters, leading to injuries, blindness, even death. And then from the gas, there are reports of ongoing respiratory problems, neurological problems. And then after these events, people report mental health issues, PTSD, which makes sense, right? Like it's not just the tear gas. So if you're experiencing tear gas, there's probably a lot of other things going on that are going to potentially contribute to mental health issues, right? But one of the things that caught my eye here is that we're actually starting to see more and more reports of health stuff that like you might not expect. So for example, researchers did a big survey of people in Portland, Oregon after the 2020 protests. I don't know if you remember, there were like weeks and weeks of protests in Portland after George Floyd's murder, yeah. And so a bunch of people reported symptoms that showed up hours or even days later. And one of the things that I thought was really interesting is that a lot of people reported gastrointestinal stuff, like diarrhea or clamping. So about like almost 30% of the people who said that they had some delayed issues, some delayed effects, they experienced GI stuff. Okay. And so I asked Jennifer like what could explain this? And she said we don't really know. But all right, you're causing a massive immune response, inflammatory response, I should say, through all parts of your body. If you're, you know, in your tear gas is in your mouth and you don't flush your mouth out and then spit the water out and you're swallowing it, trying to get it out. I don't know. Mm. I mean, yeah, it's diffuse, not just in the air, but in the body. So I guess it could affect all kinds of systems. Yeah. So yeah, that was one thing that was strange, the like gastro stuff that was coming up. But there was this other symptom rose that I found even more surprising. So a lot of people in this study and some other observational sort of survey studies like this have reported that they were menstruation was all messed up after they got to your gas. That big survey out of Oregon, I was just talking about about 900 people reported menstrual problems or breast tenderness after they were exposed. Hmm.
They were reporting stuff like cramping, it's spotting, more bleeding, longer bleeding. And there was another paper, also a survey that asked people with uterus if they had menstrual or breast symptoms after being exposed. And that paper found that more than 80% of them said they had. - Wow, yeah. I mean, and we know a lot of stuff affects menstruation, right? Like stress can affect it. But there could be other stuff happening too. As Jennifer mentioned, there's a bunch of other junk into your gas, which makes the mechanism question. - Even harder to answer. - The chemicals that activate those receptors are not the only things that are in tear gas, right? I mentioned, you have to add a whole bunch of other stuff to it in order to make it into a gas. There are so many other nasty chemicals in there that have been known to cause cancer that are known to be toxic. You have smoke also often being deployed in addition to tear gas that a lot of these protests. It's really hard for people to know what exactly they've been exposed to. Unless you can find a canister that was thrown near you and know that this is what it was and try and do your own research. So it's hard to say, this is the mechanism of action. Mechanism of action of what? What chemical, specifically what part of the chemical? Don't know. - There's also reports of miscarriage like from Palestinian women after Israeli forces used tear gas on or near them. - Yeah. - So yeah, to summarize, I would say, there's obvious direct effects of tear gas. We see them, those are becoming more and more known to us, right? But it is interesting to me that there's so many clues that whether whatever these chemicals are, they can be affecting other parts of our body and there's just so much that we don't know about it. - Yeah, that's where we're like putting it as it's sort of like being poofed out all over the place, right? - Mm-hmm. - Yeah. Spraying a chemical, we don't know that much about on a broad swath of the population. - Mm-hmm. Pretty risky, yeah. And again, I mean, we reached out to ICE, the Department of Homeland Security to ask about these safety concerns and questions if this stuff is safe. We didn't hear back, but what is clear is that even though people are reporting these awful experiences with tear gas, so far for a lot of folks it's like not stopping them from going out on the streets. The people we talked to, Minneapolis, basically all had plans to go back out. So we did look around at what you can do and like whether you can protect yourself from tear gas. - Okay. - And basically what people told us, you know, where really good goggles, something that's like really tied over your face, right? They suggested wearing gas masks. People also suggested covering yourself, like from head to toe, making sure you're covering all parts of your exposed skin and the rash stuff. - Right, 'cause it like has, when it contacts your skin, yeah, it can cause that irritation. And there's also some CDC recommendations on this actually and they say to throw your clothes away if you've been exposed to tear gas and they actually say to cut them off. So you're not like pulling your shirt over your head or whatever and getting the stuff in your eyes even more. - Yeah, that's smart. - So bottom line, there's things you can do to protect yourself, right, that might help. But you know, there's no like antidote, right? There's no like, one of the scientists told me there's no like narcan for tear gas. - But for you Rose, where does this leave you on in the land of tear gas? - Yeah, it's worse than I thought it was. - Yeah, you know, I actually told one of the protesters some of the science about the administration and she was like, great, thanks. That's like another thing for me to Google when I'm awake in the middle of the night. So I also, I'm sorry. But to me, it's like, okay, we'll figuring out what we know, what we don't know. - It was important. Well, thanks, Blythe. Next, after the break, we're gonna hear from Merrill. She's been doing research into the effects that these ice raids have on the people that are being targeted. And so that's coming up after the break. (upbeat music) - Hi, welcome back. It's Rose Rimmler here. And we just talked about the effects that tear gas might be having on people. But there are a lot of other things happening that are freaking people out. So next, we're gonna talk about the ice raids themselves. And for that, we're gonna hear from senior producer, Merrill Horn. - Hey, Rose, hey, Merrill. - Yeah, the ice raids, right? This is the thing that supposedly started everything. These immigration raids, the government said it was sending in ice to deport people who were undocumented. We heard about this from T as well, the protestor that we heard from earlier in the show. - I've literally watched them abduct people over in my neighborhood. Like they're pulling people out of their homes. I watched about two blocks away from my apartment. I heard a bunch of whistles and honking. So I walked out and literally saw them. Like pull up, they went into somebody's home and they picked up, I don't know, I don't know his name, but they picked him up and put him in a van and drove away. - And so like hearing about this, it made me curious to find out more about the ice raids. Like what effects are they having on people? How widespread are those effects? And there's actually way more science on this than I was expecting there was. So I talked about this with Bill Lopez. He's a clinical associate professor at the University of Michigan. And he studied the kind of aftermath of what happens after one of these raids. And the way he got into this work was that several years ago he was already doing a study on the health of a community when an ice raid happened. It was just miles away from his house in Michigan. - So we happened to be doing a survey of the Latino community at the same time. And the raid happened right in the middle. - 12 people were detained. And after the raid, he found that something called immigration enforcement stress went up, which is basically the fear of being deported. Maybe not that surprising. But then also people said that after the raid, their health got worse overall. And he also did these in-depth interviews, which really showed the kind of depths of the effects on people. So he told me the story of this woman who had gone with her husband to that day to pick up their car from the mechanic. - They drove in one car together. They pay for their work on their car. They leave in two cars, right? And as the husband is driving away, he's detained by immigration enforcement, by ice and he's later taken to detention. And she is watching him, 'cause he pulled out in front of her. So she is witnessing this, right? And being undocumented herself, she couldn't do anything about it. She couldn't approach the car or was she would be arrested as well. - And then Bill interviewed her later about how this experience stuck with her. - She actually described the day by saying, meaning it was a day just like any other, right? And what her husband was detained. And you never know when this intense climactic event is going to take place, right? So it's not only the level of violence, but the sudden isn't an expectedness of this violence. And at the third layer, it's the possibility that that violence can happen any day of your life. - Another research has found that ice raids aren't just impacting undocumented people. One study said that US citizens were more likely to report feeling anxious or depressed if they knew someone who was detained or deported. And it's not just mental health that's affected. Studies are finding that it can affect physical health too. And then Bill told me about this study. It was about a raid that happened in Iowa in 2008 at a meat processing plants. And it was huge. Ice deployed 900 agents and almost 300 people were deported. And what this researcher did, she looked at babies born after this raid in Iowa. And what she did is look at birth weight of infants before the raid and after the raid. And what she found is that after the raid, the average birth weight of Latino infants went down but not of white infants. - Oh my gosh. - So this, what we see, and thus we're not just from undocumented women, those were just regional birth rate records, right? Enforcement literally makes its way into the bodies of the next generation who aren't even born yet. And who don't even have a concept of citizenship status, right? - Whoa. So it was like the parents were stressed enough that I was making the babies born less healthy. And that was only affecting the Latino community. - Yeah, infants born to Latino woman had a 24% higher chance of being born with a low birth weight after the raid compared to beforehand. I asked Bill about this. And do we know what the mechanism there would be? Is this from stress? - Yeah, so the mechanism is twofold, right? One is certainly stress hormones in the mother's body. - Another thing going on could be that people are less likely to get medical care, like prenatal care if they're worried about being deported. So like there was one study that surveyed healthcare providers and almost half of them said that they had seen negative effects of ice enforcement on their immigrant patients.
One said, "Fear of getting deported keeps all of these folks away. Also even folks with green cards are afraid of losing their insurance now and of stops getting necessary treatments." Plus there's reports of ICE agents in hospitals, right? We've heard about that. So there's good reason to be afraid actually. And a lot of the work that we've been talking about here is just looking at one individual ICE raid, but what's happening in Minnesota is on a whole other level, of course. I talked about that with Bill, who said that even though he's been in this field for 15 years, what's happening now caught him off guard. ICE is arresting a literal children and is a 17-year-old, a child absolutely, I would still be angry, is a five-year-old perhaps a different level of cruelty? I would argue, yes, I'm not trying to differentiate which age of a child is worse. I'm super-horrent. I am saying they're shocked. I'm shocked that they arrested five-year-olds. I'm shocked. Technically, that boy, Liam Conejo-Ramos, the five-year-old, was detained, not arrested. But yeah, you probably saw, you know, his photo was making the rounds last week. It's that kid with the, like, the pad and the Spider-Man backpack. ICE said that his dad abandoned him and ran from the officers. His family says that they begs agents to let them keep the child. And there is reports that he and his father were seeking asylum in the U.S. and are now being detained at an ICE facility in Texas. What we see now does seem to be agents with no goodness. We seem to see agents with, like, no f*cking moral compass whatsoever. I'll rephrase that. But it's just embarrassing, it's embarrassing. What we've seen to see now is agents that are unaccountable to their actions and engage in a level of violence and cruelty on a scale that I've certainly not seen before. And there can be long-term mental health effects from this, which can vary based on, like, what exactly people are exposed to? Among other things, two things matter. That is proximity to the removal and the violence, how violence the removal is, the mental health outcomes are most severe when you're right next to your parent and you witness it, and depending on the level of the violence, right? So as we're seeing in Minnesota right now, the use of tear gas, the threatening with weapons, will have worse outcomes, understandably, than requesting that someone leaves without weapons drawn. And scientists have actually been able to study this, like, in one paper, a group of researchers found about 70 adults who had all been exposed to immigration enforcement in some way when there were kids. So maybe a member of their family or someone else in the community had been deported. And then they did these, like, in-depth interviews with them, sometimes for hours as adults and had them fill out surveys. And it found that a lot of them had anxiety as adults and that the effect was stronger if they were exposed to an event that was more severe. And then we also have lots of studies just generally showing that being exposed to violence, like police violence, is really bad for your mental health. And while a lot of this research focuses on the people who are, like, really affected by ice activity, we also have evidence that the ripple out effects from, like, a prolonged upheaval, like, what's happening in Minnesota might be huge. So, like, moving away from the US, there was a study on Hong Kong that looked at the social unrest there in 2019, all the protests in the violence and how that affected people's mental health and, like, the general population there, so not specifically protesters. And they found that someone's risk for depression went from about 2% to 11%, after the protests. So just the general population got more depressed, not just, like, people directly involved. And then finally, I talked to Bill about, like, the supposed reason for all of this. So there's this claim that the raids are making the US safer because the goal is to deport violent criminals. What does the evidence show, like, do these raids make communities safer? So, evidence is pretty clear that immigrants and undocumented immigrants are far less likely to engage in criminal activity than citizens, right? Less likely. Less likely. So, like, like, communities with more immigrants are going to have a lower crime rate, just kind of at a baseline. And how come? For many reasons, right, including that immigrants have more tenuous status in the US. And, you know, there's more legal repercussions for less serious crimes. So there tends to be less crimes, right? Yeah. So we cover this in our old immigration episode. It's talked about this in the show before. A few years ago. Yeah, immigrants are less likely to commit crimes compared to other people in the general population. And there was an analysis recently from the Cato Institute, that libertarian think tank, that analyzed a bunch of deportation data that was foiled. And it found that ICE is arresting 1,100% more non-criminals on the streets in the summer of last year compared with about, like, 10 years ago. So the vast majority of ICE arrests happening today are basically people with either non-violent criminal convictions or people with no criminal record at all. And then there's also some evidence that what's happening right now will actually make people less safe. For example, when ICE starts working with local cops and documented people are less likely to report crimes, which the authors of that study said can undermine public safety. And we also see that domestic violence calls also drop in places with a relatively high Latinx population, which means that when that type of violence is happening, people might be less likely to call for help. I would say that when people do not trust ICE, which is obviously appropriate for any number of reasons, they will not trust the police and they will not trust any other government service in that community. The man is a man, the man in green and the man in blue are the same thing. So yeah, it does seem like people are generally less healthy and less safe when ICE rates happen. Yeah. Okay. Well, thanks, Merrill. Thanks, Rose. That's science versus. This week we have 117 citations, and if you want to see all those citations, you can click on the link to our transcript and you'll find that in our show notes. This episode was produced by Blive Thrill, Merrill Horn, Michelle Deng, Aketty Foster Keys, and Minnie Rose Rimmler. Minnie Zuckerman is our executive producer, we're edited by Blive Thrill, fact-checking by Michelle Deng and Aketty Foster Keys, mix and sound design by Bobby Lorde, music written by Bobby Lorde, Boomi Hadakka, Sowiley, Emma Munger, and Peter Leonard. Special thanks to all the Minnesotans who took the time to speak to us about what's going on there, including photographer Matt Gundram. Thanks also to the other researchers we spoke to, including Dr. Margot Moynister and Professor Joanna Drebby. Thanks to Paul Schreiber, Neymar Asmi, Winnie Potter, and Jack Weinstein. Science versus is a Spotify Studios original. You can listen for free on Spotify or wherever you get your podcasts. Follow us and tap the bell for episode notifications, and we'll back you soon.
Podcast Summary
Key Points:
ICE agents in Minneapolis have conducted widespread raids, including detaining children and using excessive force such as tear gas and live fire, sparking community outrage and protests.
Tear gas, though marketed as non-lethal, causes severe physiological reactions like blindness, respiratory distress, and skin irritation, with limited scientific research on long-term health impacts including mental health, gastrointestinal issues, and menstrual disorders.
Studies show that immigration raids lead to increased anxiety, depression, and reduced physical health in affected communities, with even generational effects like lower birth weights in infants born after raids, driven by maternal stress and reduced access to healthcare.
Summary:
S. citizens—has sparked widespread fear, violence, and community disruption. Protesters have witnessed federal agents using tear gas and live ammunition, with reports of direct spraying into the eyes and injuries to civilians, including children.
The science behind tear gas reveals it activates pain and inflammatory receptors in the eyes and skin, causing symptoms like blindness, coughing, vomiting, and long-term health concerns such as gastrointestinal and menstrual issues. Research indicates these effects extend beyond immediate reactions, with lasting mental health impacts and even intergenerational consequences, such as lower birth weights in Latino infants following raids. Studies also show that ICE enforcement undermines public safety by discouraging community reporting of crimes and eroding trust in police and healthcare.
Despite claims that raids reduce crime, evidence shows immigrants are far less likely to commit offenses, and ICE arrests now target far more non-criminals than before. The combination of excessive force, trauma, and systemic distrust suggests that these actions not only violate basic rights but also harm physical and mental well-being across entire communities. Scientists and researchers emphasize a critical lack of studies on real-world exposure, especially among vulnerable populations, calling for urgent ethical and scientific scrutiny.
FAQs
Tear gas is a chemical agent that creates an aerosol spray, commonly used for crowd control. When exposed, it activates pain receptors in the eyes, skin, and throat, causing burning, tearing, coughing, and difficulty breathing. In severe cases, it can lead to blindness, respiratory distress, and even death, especially in enclosed spaces.
Yes, some research suggests long-term effects beyond immediate symptoms, including respiratory problems, neurological issues, and mental health conditions like PTSD. Reports also indicate delayed symptoms such as gastrointestinal distress and menstrual irregularities, though the exact mechanisms are still not fully understood.
Common chemicals include CS, CN, OC, and pepper spray. These activate the same pain receptors as hot peppers. However, tear gas can also contain other toxic substances that may cause cancer or harm health, and the specific mix used is often unknown.
Yes, there are reports and videos showing federal agents spraying tear gas directly into people’s eyes, which can cause severe pain, temporary blindness, and significant health risks, especially in vulnerable populations like children and the elderly.
Ice raids cause significant stress and fear of deportation, leading to anxiety, depression, and worsened mental health. Research shows that even infants born after raids may have lower birth weights, indicating long-term physical health impacts on future generations.
Yes, communities experience ripple effects. Fear of raids reduces access to healthcare, such as prenatal care, and causes widespread anxiety. Studies show that overall mental health in the population declines, even among non-targeted individuals.
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