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University of Chicago Law Review

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441

Abstract

We describe and apply three empirical approaches to identify superfluous police activity, unjustified racially disparate impacts, and limits to regulatory interventions. First, using cost-benefit analysis, we show that traffic and pedestrian stops in Nashville and New York City disproportionately impacted communities of color without achieving their stated public-safety goals. Second, we address a long-standing problem in discrimination research by presenting an empirical approach for identifying “similarly situated” individuals and, in so doing, quantify potentially unjustified disparities in stop policies in New York City and Chicago. Finally, taking a holistic view of police contact in Chicago and Philadelphia, we show that settlement agreements curbed pedestrian stops but that a concomitant rise in traffic stops maintained aggregate racial disparities, illustrating the challenges facing regulatory efforts. These case studies highlight the promise and value of viewing legal principles and policy goals through the lens of modern data analysis—both in police reform and in reform efforts more broadly.

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