Interesting article from Pacific Magazine:

http://www.psmag.com/navigation/poli...c-crime-95498/

Some of this is a state and national story, as violent crime declined by about 16 percent in both California and the nation from 2008 through 2012. But the decline has been steeper in many gang-plagued cities: 26 percent in Oxnard, 28 percent in Riverside, 30 percent in Compton, 30 percent in Pasadena, 30 percent in Montebello, 50 percent in Bell Gardens, 50 percent in El Monte.

Santa Ana once counted 70-plus homicides a year, many of them gang-related. That’s down to 15 so far in 2014, even as Santa Ana remains one of the densest, youngest, and poorest big cities in California. “Before, they were into turf,” says Detective Jeff Launi, a longtime Santa Ana Police gang investigator. “They’re still doing it, but now they’re more interested in making money.”

No place feels so changed as the city of Los Angeles. In 2014, the Los Angeles Police Department announced that gang crime had dropped by nearly half since 2008. In 2012, L.A. had fewer total homicides (299) citywide than it had gang homicides alone in 2002 (350) and in 1992 (430).

For the most part, Latino gang members no longer attack blacks in ways reminiscent of the Jim Crow South. Nor are gangs carjacking, assaulting, robbing, or in a dozen other ways blighting their own neighborhoods. Between 2003 and 2013, gang-related robberies in the city fell from 3,274 to 1,021; gang assaults from 3,063 to 1,611; and carjackings, a classic L.A. gang crime born during the heyday of crack, from 211 to 33.
The article credits the positive feedback of several factors: smarter, more community-oriented policing by the LAPD; gang injunctions to drive gangs off the street; Federal/state/local cooperation and the use of the RICO statute to arrest large numbers of gang members; gentrification, which broke up many traditional gang neighborhoods.