With calls for police reform reverberating across the United States following the death of George Floyd, outrage has focused on the ways police departments have functioned for years. True reform in policing will involve several layers of government, the work of nonprofits, and the support of the private sector. Alvin Bragg, a law professor, former prosecutor — and current candidate for Manhattan District Attorney — zeroes in on what New York City should do to enact real change.