By Philip J. Cook, Harold A. Pollack and Kailey White

Chicago became infamous for high rates of gun violence during the Tommy Gun era of the Roaring ‘20s. While Tommy Guns are rare these days, Chicago continues to have relatively high rates of lethal violence, almost all involving guns. Homicide rates in Chicago hit a post-War peak during the Crack epidemic circa 1992, and declined thereafter. But other cities, most notably New York and Los Angeles, experienced far greater reductions in violence, as did the nation as a whole. Then in 2016, Chicago experienced a spike in gun violence, with the homicide rate increasing year over year by 58% (University of Chicago Crime Lab, 2017). Reducing gun violence, already a priority for city leaders, has become still more urgent. There was also a nationwide surge in gun violence between 2014 and 2016, raising the question of whether the long downward trend in violence has reversed. What can be done? There are two basic law enforcement strategies for reducing gun violence. The first is through police and court efforts, both reactive and proactive, to deter gun misuse directly. Those efforts entail improved investigation capacity to increase the arrest and conviction rates for gun assault, but also proactive tactics to discourage illicit gun carrying. The second strategy is targeted on illicit gun transactions that arm people who might harm others. The goal is to make guns scarcer to anyone legally disqualified from buying them, including youth and people with prior felony convictions. Crafting an effective supply-side strategy requires a good understanding of how people who might harm others currently procure their guns. Providing that baseline information is the motivation for this project.

Chicago: University of Chicago Crime Lab, 2018. 152p.