WEBVTT 00:00:01.254 --> 00:00:03.912 You are a trauma surgeon, 00:00:03.936 --> 00:00:07.334 working in the midnight shift in an inner city emergency room. 00:00:08.109 --> 00:00:10.204 A young man is wheeled in before you, 00:00:10.228 --> 00:00:12.418 lying unconscious on a gurney. 00:00:12.442 --> 00:00:15.488 He's been shot in the leg and is bleeding profusely. 00:00:15.925 --> 00:00:17.822 Judging from the entry and exit wounds, 00:00:17.846 --> 00:00:19.656 as well as the amount of hemorrhaging, 00:00:19.680 --> 00:00:22.053 the bullet most likely clipped the femoral artery, 00:00:22.077 --> 00:00:24.672 one of the largest blood vessels in the body. 00:00:24.696 --> 00:00:27.998 As the young man's doctor, what should you do? 00:00:28.022 --> 00:00:31.114 Or more precisely, what should you do first? NOTE Paragraph 00:00:32.169 --> 00:00:35.621 You look at the young man's clothes, which seem old and worn. 00:00:35.645 --> 00:00:37.423 He may be jobless, homeless, 00:00:37.447 --> 00:00:39.447 lacking a decent education. 00:00:40.015 --> 00:00:42.658 Do you start treatment by finding him a job, 00:00:42.682 --> 00:00:43.944 getting him an apartment 00:00:43.968 --> 00:00:45.968 or helping him earn his GED? 00:00:46.856 --> 00:00:48.038 On the other hand, 00:00:48.062 --> 00:00:50.777 this young man has been involved in some sort of conflict 00:00:50.801 --> 00:00:52.045 and may be dangerous. 00:00:52.069 --> 00:00:53.696 Before he wakes up, 00:00:53.720 --> 00:00:55.379 do you place him in restraints, 00:00:55.403 --> 00:00:58.299 alert hospital security or call 911? 00:00:59.868 --> 00:01:02.661 Most of us wouldn't do any of these things. 00:01:02.685 --> 00:01:05.407 And instead, we would take the only sensible 00:01:05.431 --> 00:01:08.147 and humane course of action available at the time. 00:01:08.753 --> 00:01:11.253 First, we would stop the bleeding. 00:01:11.277 --> 00:01:13.380 Because unless we stop the bleeding, 00:01:13.404 --> 00:01:15.555 nothing else matters. NOTE Paragraph 00:01:16.957 --> 00:01:20.576 What's true in the emergency room is true for cities all around the country. 00:01:20.949 --> 00:01:26.164 When it comes to urban violence, the first priority is to save lives. 00:01:26.188 --> 00:01:28.546 Treating that violence with the same urgency 00:01:28.570 --> 00:01:31.410 that we would treat a gunshot wound in the ER. 00:01:32.137 --> 00:01:35.700 What are we talking about when we say "urban violence"? 00:01:36.217 --> 00:01:39.259 Urban violence is the lethal or potentially lethal violence 00:01:39.283 --> 00:01:41.283 that happens on the streets of our cities. 00:01:41.633 --> 00:01:43.093 It goes by many names: 00:01:43.117 --> 00:01:45.201 street violence, youth violence, 00:01:45.225 --> 00:01:47.225 gang violence, gun violence. 00:01:48.019 --> 00:01:49.796 Urban violence happens 00:01:49.820 --> 00:01:53.744 among the most disadvantaged and disenfranchised among us. 00:01:53.768 --> 00:01:55.364 Mostly young men, 00:01:55.388 --> 00:01:57.633 without a lot of options or much hope. NOTE Paragraph 00:01:59.328 --> 00:02:02.368 I have spent hundreds of hours with these young men. 00:02:02.392 --> 00:02:04.976 I've taught them at a high school in Washington DC, 00:02:05.000 --> 00:02:07.077 where one of my students was murdered. 00:02:07.101 --> 00:02:09.896 I've stood across form them in courtrooms in New York City, 00:02:09.920 --> 00:02:11.626 where I worked as a prosecutor. 00:02:12.087 --> 00:02:13.269 And finally, 00:02:13.293 --> 00:02:17.109 I've gone from city to city as a policymaker and as a researcher, 00:02:17.133 --> 00:02:18.617 meeting with these young men 00:02:18.641 --> 00:02:21.964 and exchanging ideas on how to make our communities safer. 00:02:24.923 --> 00:02:26.925 Why should we care about these young men? 00:02:27.942 --> 00:02:29.942 Why does urban violence matter? NOTE Paragraph 00:02:30.791 --> 00:02:32.165 Urban violence matters, 00:02:32.189 --> 00:02:35.236 because it causes more deaths here in the United States 00:02:35.260 --> 00:02:37.716 than any other form of violence. 00:02:38.598 --> 00:02:39.899 Urban violence also matters 00:02:39.923 --> 00:02:42.526 because we can actually do something about it. 00:02:42.868 --> 00:02:45.864 Controlling it is not the impossible, intractable challenge 00:02:45.888 --> 00:02:47.700 that many believe it to be. 00:02:48.084 --> 00:02:51.592 In fact, there are a number of solutions available today 00:02:51.616 --> 00:02:53.410 that are proven to work. 00:02:53.879 --> 00:02:58.058 And what these solutions have in common is one key ingredient. 00:02:58.514 --> 00:03:02.033 They all recognize that urban violence is sticky, 00:03:02.490 --> 00:03:04.451 meaning that it clusters together 00:03:04.475 --> 00:03:08.299 among a surprisingly small number of people and places. NOTE Paragraph 00:03:08.967 --> 00:03:10.637 In New Orleans, for instance, 00:03:10.661 --> 00:03:13.199 a network of fewer than 700 individuals 00:03:13.223 --> 00:03:16.620 accounts for the majority of the city's lethal violence. 00:03:16.644 --> 00:03:19.233 Some call these individuals "hot people." 00:03:19.807 --> 00:03:20.982 Here in Boston, 00:03:21.006 --> 00:03:22.356 70 percent of shootings 00:03:22.380 --> 00:03:26.942 are concentrated on blocks and corners covering just five percent of the city. 00:03:27.688 --> 00:03:30.648 These locations are often known as "hot spots." 00:03:31.292 --> 00:03:32.834 In city after city, 00:03:32.858 --> 00:03:35.831 a small number of hot people and hot spots 00:03:35.855 --> 00:03:38.701 account for the clear majority of lethal violence. 00:03:39.169 --> 00:03:42.479 In fact, this finding has been replicated so many times 00:03:42.503 --> 00:03:46.876 that researchers now call this phenomenon the law of crime concentration. NOTE Paragraph 00:03:47.365 --> 00:03:52.000 When we look at the science, we see that sticky solutions work best. 00:03:52.539 --> 00:03:54.444 To put it bluntly, 00:03:54.468 --> 00:03:57.995 you can't stop shootings if you won't deal with shooters. 00:03:58.577 --> 00:04:02.482 And you can't stop killings if you won't go where people get killed. NOTE Paragraph 00:04:03.522 --> 00:04:04.697 Four years ago, 00:04:04.721 --> 00:04:07.355 my colleagues and I performed a systematic meta-review 00:04:07.379 --> 00:04:09.225 of antiviolence strategies, 00:04:09.249 --> 00:04:15.177 summarizing the results of over 1,400 individual impact evaluations. 00:04:15.717 --> 00:04:17.993 What we found, again and again, 00:04:18.017 --> 00:04:20.636 was that the strategies that were the most focused, 00:04:20.660 --> 00:04:22.001 the most targeted, 00:04:22.025 --> 00:04:23.993 the stickiest strategies, 00:04:24.017 --> 00:04:25.533 were the most successful. 00:04:25.927 --> 00:04:27.276 We saw this in criminology, 00:04:27.300 --> 00:04:30.831 in studies of policing, gang prevention and reentry. 00:04:31.177 --> 00:04:33.749 But we also saw this in public health, 00:04:33.773 --> 00:04:36.870 where targeted tertiary and secondary prevention 00:04:36.894 --> 00:04:40.367 performed better than more generalized primary prevention. 00:04:41.150 --> 00:04:44.801 When policymakers focus on the most dangerous people and places, 00:04:44.825 --> 00:04:46.705 they get better results. NOTE Paragraph 00:04:48.046 --> 00:04:51.624 What about replacement and displacement, you might ask. 00:04:52.466 --> 00:04:54.998 Research shows that when drug dealers are locked up, 00:04:55.022 --> 00:04:58.617 new dealers step right in, replacing those that came before. 00:04:59.165 --> 00:05:02.536 Some worry that when police focus on certain locations, 00:05:02.560 --> 00:05:04.226 crime will be displaced, 00:05:04.250 --> 00:05:06.733 moving down the street or around the corner. 00:05:07.496 --> 00:05:11.723 Fortunately, we know now that because of the stickiness phenomenon, 00:05:11.747 --> 00:05:16.131 the replacement and displacement effects associated with these sticky strategies 00:05:16.155 --> 00:05:17.467 are minimal. 00:05:17.870 --> 00:05:21.193 It takes a lifetime of trauma to create a shooter 00:05:21.217 --> 00:05:24.407 and decades of disinvestment to create a hot spot. 00:05:24.780 --> 00:05:28.105 So these people and places don't move around easily. NOTE Paragraph 00:05:31.582 --> 00:05:33.114 What about root causes? 00:05:33.519 --> 00:05:37.228 Isn't addressing poverty or inequality or lack of opportunity 00:05:37.252 --> 00:05:39.252 the best way to prevent violence? 00:05:39.768 --> 00:05:41.323 Well, according to the science, 00:05:41.347 --> 00:05:42.649 yes and no. 00:05:42.673 --> 00:05:46.455 Yes, in that high rates of violence are clearly associated 00:05:46.479 --> 00:05:49.653 with various forms of social and economic disadvantage. 00:05:49.677 --> 00:05:51.883 But no, in that changes in these factors 00:05:51.907 --> 00:05:54.783 do not necessarily result in changes in violence, 00:05:54.807 --> 00:05:56.553 especially not in the short run. 00:05:57.188 --> 00:05:59.114 Take poverty, for instance. 00:05:59.138 --> 00:06:02.796 Meaningful progress on poverty will take decades to achieve, 00:06:02.820 --> 00:06:06.967 while poor people need and deserve relief from violence right now. 00:06:07.339 --> 00:06:10.664 Root causes also can't explain the stickiness phenomenon. 00:06:10.974 --> 00:06:13.026 If poverty always drove violence, 00:06:13.050 --> 00:06:16.193 then we would expect to see violence among all poor people. 00:06:16.534 --> 00:06:18.000 But we don't see that. NOTE Paragraph 00:06:18.471 --> 00:06:23.561 Instead, we can empirically observe that poverty concentrates, 00:06:23.585 --> 00:06:25.823 crime concentrates further still 00:06:25.847 --> 00:06:28.251 and violence concentrates most of all. 00:06:29.085 --> 00:06:31.367 That is why sticky solutions work. 00:06:31.947 --> 00:06:35.256 They work, because they deal with first things first. 00:06:35.812 --> 00:06:37.003 And this is important, 00:06:37.027 --> 00:06:39.387 because while poverty may lead to violence, 00:06:39.411 --> 00:06:43.632 strong evidence shows that violence actually perpetuates poverty. NOTE Paragraph 00:06:44.585 --> 00:06:46.233 Here's just one example of how. 00:06:46.257 --> 00:06:48.582 As documented by Patrick Sharkey, 00:06:48.606 --> 00:06:50.455 a sociologist -- 00:06:50.479 --> 00:06:54.612 he showed that when poor children are exposed to violence, 00:06:54.636 --> 00:06:55.898 it traumatizes them. 00:06:55.922 --> 00:06:58.644 It impacts their ability to sleep, 00:06:58.668 --> 00:07:01.842 to pay attention, to behave and to learn. 00:07:02.387 --> 00:07:04.323 And if poor children can't learn, 00:07:04.347 --> 00:07:06.220 then they can't do well in school. 00:07:06.244 --> 00:07:11.006 And that ultimately impacts their ability to earn a paycheck later in life 00:07:11.030 --> 00:07:12.900 that is large enough to escape poverty. NOTE Paragraph 00:07:13.371 --> 00:07:16.054 And unfortunately, in a series of landmark studies 00:07:16.078 --> 00:07:18.220 by economist Raj Chetty, 00:07:18.244 --> 00:07:20.244 that is exactly what we've seen. 00:07:20.839 --> 00:07:24.871 Poor children exposed to violence have lower income mobility 00:07:24.895 --> 00:07:26.895 than poor children who grow up peacefully. 00:07:27.553 --> 00:07:30.947 Violence literally traps poor kids in poverty. 00:07:31.273 --> 00:07:36.550 That is why it is so important to focus relentlessly on urban violence. 00:07:36.574 --> 00:07:38.574 Here are two examples of how. NOTE Paragraph 00:07:39.087 --> 00:07:41.849 Here in Boston, in the 1990s, 00:07:41.873 --> 00:07:44.325 a partnership between cops and community members 00:07:44.349 --> 00:07:48.410 achieved a stunning 63 percent reduction in youth homicide. 00:07:48.434 --> 00:07:50.815 In Oakland, that same strategy 00:07:50.839 --> 00:07:54.529 recently reduced nonfatal gun assaults by 55 percent. 00:07:54.919 --> 00:07:58.576 In Cincinnati, Indianapolis and New Haven, 00:07:58.600 --> 00:08:01.028 it cut gun violence by more than a third. 00:08:01.496 --> 00:08:03.394 At its simplest, 00:08:03.418 --> 00:08:07.926 this strategy simply identifies those who are most likely to shoot 00:08:07.950 --> 00:08:09.410 or be shot, 00:08:09.434 --> 00:08:11.693 and then confronts them with a double message 00:08:11.717 --> 00:08:13.717 of empathy and accountability. 00:08:14.431 --> 00:08:16.875 "We know it's you that's doing the shooting. 00:08:17.217 --> 00:08:18.633 It must stop. 00:08:19.034 --> 00:08:21.034 If you let us, we will help you. 00:08:21.574 --> 00:08:23.748 If you make us, we will stop you." 00:08:24.550 --> 00:08:27.788 Those willing to change are offered services and support. 00:08:28.746 --> 00:08:30.747 Those who persist in their violent behavior 00:08:30.771 --> 00:08:34.023 are brought to justice via targeted law enforcement action. NOTE Paragraph 00:08:34.864 --> 00:08:39.585 In Chicago, another program uses cognitive behavioral therapy 00:08:39.609 --> 00:08:41.323 to help teenage boys 00:08:41.347 --> 00:08:43.617 manage difficult thoughts and emotions, 00:08:43.641 --> 00:08:47.220 by teaching them how to avoid or mitigate conflicts. 00:08:47.244 --> 00:08:50.443 This program reduced violent crime arrests among participants 00:08:50.467 --> 00:08:51.895 by half. 00:08:51.919 --> 00:08:54.506 Similar strategies have reduced criminal reoffending 00:08:54.530 --> 00:08:56.530 by 25 to 50 percent. 00:08:57.236 --> 00:08:59.283 Now Chicago has launched a new effort, 00:08:59.307 --> 00:09:00.743 using these same techniques, 00:09:00.767 --> 00:09:03.434 but with those at the highest risk for gun violence. 00:09:03.458 --> 00:09:06.100 And the program is showing promising results. 00:09:07.169 --> 00:09:08.876 What's more, 00:09:08.900 --> 00:09:11.847 because these strategies are so focused, so targeted, 00:09:11.871 --> 00:09:14.259 they tend not to cost much in absolute terms. 00:09:14.561 --> 00:09:17.474 And they work with the laws already on the books today. NOTE Paragraph 00:09:18.550 --> 00:09:20.333 So that's the good news. 00:09:20.947 --> 00:09:23.161 We can have peace in our cities, 00:09:23.185 --> 00:09:24.526 right now, 00:09:24.550 --> 00:09:26.355 without big budgets 00:09:26.379 --> 00:09:28.148 and without new laws. 00:09:30.411 --> 00:09:32.411 So why hasn't this happened yet? 00:09:32.934 --> 00:09:36.459 Why are these solutions still limited to a small number of cities, 00:09:36.483 --> 00:09:39.656 and why do they struggle, even when successful, 00:09:39.680 --> 00:09:41.378 to maintain support? 00:09:42.133 --> 00:09:43.831 Well, that's the bad news. 00:09:43.855 --> 00:09:47.395 The truth is, we have not been very good at organizing our efforts 00:09:47.419 --> 00:09:49.558 around this phenomenon of stickiness. NOTE Paragraph 00:09:50.249 --> 00:09:53.344 There are at least three reasons why we don't follow the evidence 00:09:53.368 --> 00:09:55.400 when it comes to urban violence reduction. 00:09:55.424 --> 00:09:57.553 And the first, as you might expect, 00:09:57.577 --> 00:09:58.933 is politics. 00:09:59.799 --> 00:10:04.045 Most sticky solutions don't conform to one political platform or another. 00:10:04.395 --> 00:10:08.041 Instead, they offer both carrots and sticks, 00:10:08.065 --> 00:10:10.955 balancing the promise of treatment with the threat of arrest, 00:10:10.979 --> 00:10:13.933 combining place-based investment with hot-spots policing. 00:10:14.487 --> 00:10:16.087 In other words, 00:10:16.111 --> 00:10:19.261 these solutions are both soft and tough 00:10:19.285 --> 00:10:20.825 at the same time. 00:10:21.509 --> 00:10:23.117 Because they don't line up neatly 00:10:23.141 --> 00:10:27.188 with the typical talking points of either the Left or the Right, 00:10:27.212 --> 00:10:31.491 politicians won't gravitate to these ideas without some education, 00:10:31.515 --> 00:10:33.339 and maybe even a little pressure. 00:10:33.950 --> 00:10:35.125 It won't be easy, 00:10:35.149 --> 00:10:37.672 but we can change the politics around these issues 00:10:37.696 --> 00:10:42.114 by reframing violence as a problem to be solved, 00:10:42.138 --> 00:10:44.502 not an argument to be won. 00:10:44.900 --> 00:10:47.455 We should emphasize evidence over ideology 00:10:47.479 --> 00:10:49.843 and what works versus what sounds good. NOTE Paragraph 00:10:50.987 --> 00:10:53.693 The second reason why we don't always follow the evidence 00:10:53.717 --> 00:10:57.098 is the somewhat complicated nature of these solutions. 00:10:57.122 --> 00:10:58.614 There is an irony here. 00:10:59.030 --> 00:11:01.815 What are the simplest ways to reduce violence? 00:11:02.712 --> 00:11:03.950 More cops. 00:11:04.268 --> 00:11:05.586 More jobs. 00:11:05.610 --> 00:11:07.014 Fewer guns. 00:11:08.498 --> 00:11:09.855 These are easy to spell out, 00:11:09.879 --> 00:11:12.506 but they tend not to work as well in practice. 00:11:12.530 --> 00:11:13.744 While on the other hand, 00:11:13.768 --> 00:11:17.022 research-based solutions are harder to explain, 00:11:17.046 --> 00:11:18.800 but get better results. 00:11:19.504 --> 00:11:21.766 Right now, we have a lot of professors 00:11:21.790 --> 00:11:24.155 writing about violence in academic journals. 00:11:24.179 --> 00:11:27.313 And we have a lot of people keeping us safe out on the street. 00:11:27.680 --> 00:11:28.839 But what we don't have 00:11:28.863 --> 00:11:31.291 is a lot of communication between these two groups. 00:11:31.315 --> 00:11:34.553 We don't have a strong bridge between research and practice. 00:11:35.688 --> 00:11:38.122 And when research actually does inform practice, 00:11:38.146 --> 00:11:40.050 that bridge is not built by accident. 00:11:40.074 --> 00:11:42.828 It happens when someone takes the time 00:11:42.852 --> 00:11:45.177 to carefully explain what the research means, 00:11:45.201 --> 00:11:46.379 why it's important 00:11:46.403 --> 00:11:49.132 and how it can actually make a difference in the field. 00:11:49.974 --> 00:11:52.220 We spend plenty of time creating research, 00:11:52.244 --> 00:11:55.752 but not enough breaking it down into bite-sized bits 00:11:55.776 --> 00:11:59.712 that a busy cop or social worker can easily digest. NOTE Paragraph 00:12:02.749 --> 00:12:05.090 It may be difficult to acknowledge or accept, 00:12:05.114 --> 00:12:07.876 but race is the third and final reason 00:12:07.900 --> 00:12:11.429 why more has not been done to reduce violence. 00:12:12.795 --> 00:12:16.414 Urban violence concentrates among poor communities of color. 00:12:17.152 --> 00:12:20.807 That makes it easy for those of us who don't live in those communities 00:12:20.831 --> 00:12:24.015 to ignore the problem or pretend it's not ours to solve. 00:12:24.744 --> 00:12:26.728 That is wrong, of course. 00:12:26.752 --> 00:12:29.553 Urban violence is everyone's problem. 00:12:29.577 --> 00:12:31.291 Directly or indirectly, 00:12:31.315 --> 00:12:33.814 we all pay a price for the shootings and killings 00:12:33.838 --> 00:12:35.838 that happen on the streets of our cities. 00:12:36.417 --> 00:12:39.671 That is why we need to find new ways to motivate more people 00:12:39.695 --> 00:12:42.667 to cross class and color lines to join this struggle. 00:12:43.822 --> 00:12:46.861 Because these strategies are not resource-intensive, 00:12:46.885 --> 00:12:49.496 we don't need to motivate many new allies -- 00:12:49.520 --> 00:12:51.145 we just need a few. 00:12:51.169 --> 00:12:53.169 And we just need them to be loud. NOTE Paragraph 00:12:54.747 --> 00:12:56.899 If we can overcome these challenges 00:12:56.923 --> 00:13:00.363 and spread these sticky solutions to the neighborhoods that need them, 00:13:00.387 --> 00:13:02.387 we could save thousands of lives. 00:13:03.752 --> 00:13:05.776 If the strategies I've discussed here today 00:13:05.800 --> 00:13:10.720 were implemented right now in the nation's 40 most violent cities, 00:13:10.744 --> 00:13:13.466 we could save over 12,000 souls 00:13:13.490 --> 00:13:15.259 over the next eight years. NOTE Paragraph 00:13:16.514 --> 00:13:18.114 How much would it cost? 00:13:18.138 --> 00:13:20.138 About 100 million per year. 00:13:20.582 --> 00:13:23.542 That might sound like a lot, 00:13:23.566 --> 00:13:26.410 but in fact, that figure represents less than one percent 00:13:26.434 --> 00:13:29.434 of one percent of the annual federal budget. 00:13:29.458 --> 00:13:31.768 The Defense Department spends about that much 00:13:31.792 --> 00:13:34.291 for a single F-35 fighter jet. NOTE Paragraph 00:13:35.363 --> 00:13:38.340 Metaphorically, the treatment is the same, 00:13:38.364 --> 00:13:41.220 whether it's a young man suffering from a gunshot wound, 00:13:41.244 --> 00:13:43.688 a community riddled with such wounds, 00:13:43.712 --> 00:13:46.045 or a nation filled with such communities. 00:13:46.355 --> 00:13:49.688 In each case, the treatment, first and foremost, 00:13:49.712 --> 00:13:51.616 is to stop the bleeding. 00:13:55.582 --> 00:13:57.433 I know this can work. 00:13:58.217 --> 00:14:00.217 I know it, because I've seen it. 00:14:01.158 --> 00:14:03.539 I've seen shooters put down their guns 00:14:03.563 --> 00:14:07.229 and devote their lives to getting others to do the same. 00:14:07.253 --> 00:14:10.721 I've walked through housing projects that were notorious for gunfire 00:14:10.745 --> 00:14:12.942 and witnessed children playing outside. 00:14:12.966 --> 00:14:15.149 I've sat with cops and community members 00:14:15.173 --> 00:14:18.514 who used to hate one another, but now work together. 00:14:18.538 --> 00:14:21.410 And I've seen people from all walks of life, 00:14:21.434 --> 00:14:23.123 people like you, 00:14:23.147 --> 00:14:25.686 finally decide to get involved in this struggle. 00:14:26.004 --> 00:14:27.997 And that's why I know that together, 00:14:28.021 --> 00:14:32.129 we can and we will end this senseless slaughter. NOTE Paragraph 00:14:33.063 --> 00:14:34.262 Thank you. NOTE Paragraph 00:14:34.286 --> 00:14:38.603 (Applause)