"I watched the second part of a documentary on BBC 1 last night, in which Dan Murdoch (British) was exploring Black Power in USA."

I saw this documentary too, and it was profoundly depressing. I really have no idea how this entire situation can be tackled, although I was disturbed by the chap in the kevlar vest with the gun, who was showing all this stuff in front of his little kids. It can't be a good thing to expose them to weapons and such fear at an early age... it was heartbreaking for them.