An Empirical Analysis of Racial Differences in Police Use of Force NBER
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Research by @RolandFryer finds that black & Hispanic individuals are over 50% more likely to experience non-lethal force in police interactions, despite controlling for context & civilian behavior. No racial differences in officer-involved shootings.
Initial Fryer paper:“This paper explores racial differences in police use of force. On non-lethal uses of force, blacks and Hispanics are more than fifty percent more likely to experience some form of force in interactions with police. Adding controls that account for important context and civilian behavior reduces, but cannot fully explain, these disparities. On the most extreme use of force - officer-involved shootings - we find no racial differences in either the raw data or when contextual factors are taken into account. We argue that the patterns in the data are consistent with a model in which police officers are utility maximizers, a fraction of which have a preference for discrimination, who incur relatively high expected costs of officer-involved shootings.”
Roland Fryer, “An Empirical Analysis Of Racial Differences In Police Use of Force,” National Bureau Of Economic Research, July 2016 (Revised January 2018)https://www.nber.org/papers/w22399
His data suggests that an officer’s race doesn’t really have an impact on use of force:
“…We use four sources of data - none ideal - which together paint an empirical portrait of racial di↵erences in police use of force conditional on an interaction. The first two data sources - NYC’s Stop and Frisk program and the Police-Public Contact Survey (PPCS) - provide information on non-lethal force from both the police and civilian perspectives, respectively…The database contains detailed information on the characteristics of each stop (precinct, cross streets, time of day, inside/outside, high/low crime area), civilian demographics (race, age, gender, height, weight, build, type of identification provided), whether or not the officers were in uniform, encounter characteristics (reason for stop, reason for frisk (if any), reason for search (if any), suspected crime(s)), and post-encounter characteristics (whether or not a weapon was eventually found or whether an individual was summonsed, arrested, or a crime committed). Perhaps the most novel component of the data is that officers are required to document which one of the following seven uses of force was used, if any: (1) hands, (2) force to a wall, (3) handcuffs, (4) draw weapon, (5) push to the ground, (6) point a weapon, (7) pepper spray or (8) strike with a baton.6 Ocers are instructed to include as many uses of force as applicable…”
Here ae the levels of force the data records:
“…. Second, lower level uses of force - such as the use of hands - are both recorded in these data and more frequently used by law enforcement than more intense uses of force. For instance, if one were to use arrest data to glean use of force, many lower level uses of force would simply be considered standard operating procedure. Putting hands on a suspect, pushing them up against a wall, and putting handcuffs on them are so un-noteworthy in the larger context of an arrest that they are not recorded in typical arrest descriptions. Yet, because proactive policing is a larger and less confrontational portion of police work, these actions warrant data entry….”
























Steve Comment:Looking through the paper to find out how much of the data is lower level force but lower level force is more frequent:
Ed Comment:“We found that when police reported the incidents, they were 53% more likely to use physical force on a black civilian than a white one. We controlled for every variable available in myriad ways. That reduced the racial disparities by 66%, but blacks were still significantly more likely to endure police force.” Does that mean 53% x (100% - 66%) = 17.5% more likely all things equal (other than race)? That seems consistent with his finding that if you don’t resist, blacks have are 21% more likelihood of suffering police aggression than whites. He says aggression includes “officers putting their hands on civilians” to officers shooting unarmed suspects. Presumably, most of the incidents are minor incidences (e.g., hands on). And he finds no disparity at the highest level of aggression (killing). So it may be the case that the disparities range from high for minor acts to none existent for major acts of aggression. So how much of the 17.5% difference stems from minor acts of aggression vs major acts? Despite it being an obvious question, oddly, he doesn’t say. That suggests he is being less than forthcoming about it, and therefore there may be big differences he has chosen not to reveal in the op-ed. Please examine the report. Chetty did the same thing in his teacher study. Teachers had big effects in total. But those effect came predominantly from the most talented students, which was overlooked in the reporting. That doesn’t bode well for improving the scores of low-scores, which was the point of his study and recommendation.
Ed Comment:“We found that when police reported the incidents, they were 53% more likely to use physical force on a black civilian than a white one. We controlled for every variable available in myriad ways. That reduced the racial disparities by 66%, but blacks were still significantly more likely to endure police force.” Does that mean 53% x (100% - 66%) = 17.5% more likely all things equal (other than race)? That seems consistent with his finding that if you don’t resist, blacks have are 21% more likelihood of suffering police aggression than whites. He says aggression includes “officers putting their hands on civilians” to officers shooting unarmed suspects. Presumably, most of the incidents are minor incidences (e.g., hands on). And he finds no disparity at the highest level of aggression (killing). So it may be the case that the disparities range from high for minor acts to none existent for major acts of aggression. So how much of the 17.5% difference stems from minor acts of aggression vs major acts? Despite it being an obvious question, oddly, he doesn’t say. That suggests he is being less than forthcoming about it, and therefore there may be big differences he has chosen not to reveal in the op-ed. Please examine the report. Chetty did the same thing in his teacher study. Teachers had big effects in total. But those effect came predominantly from the most talented students, which was overlooked in the reporting. That doesn’t bode well for improving the scores of low-scores, which was the point of his study and recommendation. PS it would also be revealing to see the disparity between how black and white cops treat black and white suspects, all other things equal. The later is relevant because back cops are likely to be in black neighborhoods dealing with more violent crimes and criminals. So you have to hold those things equal. It may be the case that back cops are as racist as white cops. But if they are, it would be an indication there may be hidden variables at work. Again, he has the data but he doesn't say. That's not a good sign. BTW, what mired of variables do they measure? PSS I suspect the “hidden variable” is the probability of escalation by the suspect. Surely police use aggression to deter aggression/escalation. We know blacks commit more crime and more violent crime. So it seems likely they are more likely to escalate with police than whites. I’m curious to see if he includes this variable. It seems like he has the data to estimate it. And he seems surprisingly reluctant to say that his analysis shows racism.
Ed Comment:I read the paper. It raised (in me) all the concerns I raised to you. Black officers act the same toward blacks and whites as white officers. Disparities in the use of force decline as force increases. And their data comes primarily from stop and frisk, which WAS an extreme form of policing. They try to make an estimate of the dangerousness of the suspect but their estimate is silly—education, income, and employment—none of which would be know to the officer, and probably not very predictable since so few people commit crimes. Ironically, in many instances, especially with stop and frisk, the office may know the suspect. And nowhere where did I see a simple measure of how much more dangerous are whites than blacks on average or more precisely white stopped by the police vs blacks stopped by the police. Since blacks commit 8-times as much crime, it seems likely they are more dangerous on average. By measuring the dangerousness of suspects with variables such as income, education, and employment, that an officer can’t identify, you limit the use of aggressiveness to reactive uses rather than proactive uses. That limitation seems impractical. If I apprehend a frail man or women, i.e., less dangerous to me, I might be much less inclined to use proactive aggressiveness because I know I can win reactively. (SWAT teams come storming in with overwhelming firepower to discourage aggressiveness before it starts. Policemen wear guns to be intimidating.) If I fear that I can’t win reactively, I might try to intimidate you into not trying in the first place, so I can reduce the chances of needing to react. It surely seems odd that black policemen would discriminately treat black suspects the same as white policemen treat them, if there were no hidden variables/reasons, i.e. it was merely racism.