Flexb, brown like mostly Mexican-American. The illegal Mexican's, who form gangs (and there kids) don't always get along with the Mexican-American gangs that well. So there's something going on with that too.
More Central Americans moving in that area, so they form gangs also. Brown/Latin population are beginning to overwhelm the original blacks in Compton & Harbor area. Lots of tensions develop. Actually Compton has a somewhat middle class majority and they do take a certain amount of pride in that area. Sure, there are certain bad areas like anywhere else in any city, but Compton it's self is not that out of line. Some Asian gangs are crossing over from Orange county, so more tensions.
Cops could make a major dent in gangs & crime, almost over night, but it that civil rights and race card thing that is played every day by the politicians, ACLU and bogus civil rights groups.
A 75 cent 9mm round, to the back of the head in the middle of the night, could do a lot to really take a bit out of crime. Getting rid of gangs, one at a time, is like removing a cancer that threatens the more normal way of life for thousands of people.