In the first full month since it was created to take illegal guns off the street, Flint's Special Investigative Unit seized 64 firearms and made dozens of arrests. The unit's predictive policing approach relies on data that tell the police where gun crimes are concentrated. Critics contend that focusing enforcement on historically high-crime areas creates a feedback loop of racially disparate policing, in that more cops in a neighborhood means more arrests, which in turn invites more enforcement. Targeted gun enforcement has a mixed record of crime reductions and racial inequities.