IN THE fall of 2006, crime-fighting guru David Kennedy received a phone call from the mayor of Cincinnati. The city, the mayor explained, was on fire. In 2000, Cincinnati experienced 40 homicides, but by 2005 the number had nearly doubled to 79.
The police department was chronically troubled. In 2001, police shot an unarmed black man, setting off a violent riot. In many neighborhoods, the police were seen as the enemy. There seemed no way out.
Kennedy agreed to help. The police department drew up a list of the city’s violent gang members. The city organized “call ins,’’ meetings where the gang bangers heard from law enforcement, representatives of the community, and others. And a message was delivered: We want you to choose another way. We will help you. But the shootings have to stop. The next time there is gunfire, we will find the shooter, and then we will take down everyone in the shooter’s gang. Promise.