How community members like Cynthia Mendenhall, a former gang member, have teamed up with police and other leaders to negotiate peace in L.A.’s toughest neighborhoods:

“Causality is slippery, especially when it comes to crime. The L.A.P.D.’s decision to deploy 30 additional officers to Watts’s three largest housing projects has undoubtedly contributed to the area’s improvement. Research has shown that ‘hot-spot policing’ — flooding high-crime areas with police officers — effectively reduces crime without simply displacing it. But the department’s efforts in Watts go beyond ‘cops on dots.’ In recent years, the L.A.P.D. has been conducting an unusual experiment in community policing in Watts. Its centerpiece, the Community Safety Partnership, is the department’s collaboration with a group of residents known as the Watts Gang Task Force. Every Monday morning, community leaders meet with top police commanders to discuss what’s happening in the Watts gang world — who’s feuding with whom, where criminal investigations stand, which are the issues residents are worried about. What makes the initiative unusual is that many of the task force’s participants have close ties to street gangs. Some, like Mendenhall, are former gang leaders. Others are the mothers and grandmothers of notorious gang leaders past and present.”