When President Joe Biden introduced his crime-prevention strategy to reporters in late June, he highlighted the community intervention efforts that DeVone Boggan launched in Richmond in 2010 and encouraged other cities to invest in such programs. Boggan, former director of Richmond’s Neighborhood Safety Office, started the Advance Peace nonprofit five years ago to introduce his Peacemaker Fellowship program to other cities. The program is similar to Ceasefire and Cure Violence in that it addresses the root causes of gun violence….