One would think the tribes would run low on manpower after a while. Where do they keep coming from?
As long as the government pays their women to keep squirting out babies, you will have an endless supply of gang banger boys.
If you're a boy, you need to be a gang banger to score with the girls. If you're a girl, you need a gang banger boyfriend to protect you from all the OTHER predators. Plus the gang bangers are the ones with the cash to show their girlfriends a good time.
Eliminate welfare, give ghetto girls NO CHOICE but to marry someone with a stable honest job, and the problem goes away within a generation.
Young guys do what gets them laid. If gang-banging gets them laid, they will gang-bang. If being a McDonalds manager gets them laid, they will manage McDonalds.