L.A. Gang Crackdown The new Los Angeles police chief is taking some new approaches to controlling the city's 400 gangs. He has a "gang unit deployment center" acting like an army command center, tracking gang movement and planning counter-offensives, particularly against the leaders. He also has told the community that most kids can be saved, and he wants his cops to act as social workers. NPR's Mandalit del Barco reports.