Richard Mejico is a hardcore gang member doing time for murder. So is his cellmate: his son, Steven. This ABC News report explains how Criminals and Gang Members Anonymous, the 12-step program founded by Richard, is helping people addicted to criminal violence to break the cycle of revenge and find peace. Interviews with other convicts who are taking the C.G.A. message to heart and Martha - Richard’s wife and Steven’s mother - are also included.