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SJ Quinney College of Law, University of Utah

Chicago

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What Caused The 2016 Chicago Homicide Spike? An Empirical Examination Of The 'Aclu Effect' And The Role Of Stop And Frisks In Preventing Gun Violence, Paul Cassell, Richard Fowles Mar 2018

What Caused The 2016 Chicago Homicide Spike? An Empirical Examination Of The 'Aclu Effect' And The Role Of Stop And Frisks In Preventing Gun Violence, Paul Cassell, Richard Fowles

Utah Law Faculty Scholarship

Homicides increased dramatically in Chicago in 2016. In 2015, 480 Chicago residents were killed. The next year, 754 were killed–274 more homicide victims, tragically producing an extraordinary 58% increase in a single year. This article attempts to unravel what happened.

This article provides empirical evidence that the reduction in stop and frisks by the Chicago Police Department beginning around December 2015 was responsible for the homicide spike that started immediately thereafter. The sharp decline in the number of stop and frisks is a strong candidate for the causal factor, particularly since the timing of the homicide spike so perfectly coincides …