02606oam 22004213a 450 991071738310332120231030204711.0(CKB)4100000011312553(OCoLC)1240246930(NBER)w27324(EXLCZ)99410000001131255320230622d2020 fy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierPolicing the PoliceThe Impact of "Pattern-or-Practice" Investigations on Crime /Tanaya Devi, Roland G. Fryer Jr[Library of Congress public edition].Cambridge, Massachusetts :National Bureau of Economic Research,2020.[Washington, D.C.] :Congressional Research Service,2020-1 online resourceillustrations (black and white);NBER working paper series ;no. w27324June 2020.This paper provides the first empirical examination of the impact of federal and state "Pattern-or-Practice" investigations on crime and policing. For investigations that were not preceded by "viral" incidents of deadly force, investigations, on average, led to a statistically significant reduction in homicides and total crime. In stark contrast, all investigations that were preceded by "viral" incidents of deadly force have led to a large and statistically significant increase in homicides and total crime. We estimate that these investigations caused almost 900 excess homicides and almost 34,000 excess felonies. The leading hypothesis for why these investigations increase homicides and total crime is an abrupt change in the quantity of policing activity. In Chicago, the number of police-civilian interactions decreased by almost 90% in the month after the investigation was announced. In Riverside CA, interactions decreased 54%. In St. Louis, self-initiated police activities declined by 46%. Other theories we test such as changes in community trust or the aggressiveness of consent decrees associated with investigations -- all contradict the data in important ways.Working Paper Series (National Bureau of Economic Research) ;no. w27324.Policing the PoliceEconomicsEconomicsDevi Tanaya1365088Fryer Roland G1431862National Bureau of Economic Research.MaCbNBERMaCbNBERBOOK9910717383103321Policing the Police3574709UNINA