You're a good egg LG so I don't think you're trying to justify the violence that's going on. Nothing will ever change going down this route, the US carry guns and unlike our Poll Tax riots, won't back down to these tactics. Looking at the mayhem, there are loads of white people joining in, throwing bricks. Surely these are people who would now vote for change, or be prepared to join in boycotts, strike action etc?
I don't doubt this gerrymandering so am surprised they were able to elect a black president. Took time but that was folks at the ballot boxes, not torching buildings.