I’m playing the man’s principles, Retro. There’s no need to address the OP if you read just a few of AOG’s 60 questions on Gangs. He’s been told several times why they’re difficult to police (he knows it’s because they are black but he’s too disingenuous to mention it first himself, preferring to let someone’s else make the first move, thinking this gives him the moral high ground).
If you want to waste time telling him the same thing he’s been told dozens of times, go ahead.