Here's DeVone Boggan, the CEO of Advance Peace, talking about the program on the radio. Here's The Daily Show piece on it.
The program was started in Richmond, CA, and expanded to Sacramento and soon to be expanded to Stockton, CA. It includes mentorship, "transformative travel" (where gang members are paid for to travel to see the world beyond their city block) and paid incentives. It boasts a 71% decrease in gun violence in Richmond since starting this program in 2009.
johnnyFive, rd95, goobster (with one of whom I had a fruitless — on my part — debate about preventing gun violence, but I can't remember with whom)