it's because white people on boats kidnapped them???
Blacks grabbed them back in africa and sold them to whites. May be there should be a war between them. Fight the clans that sold slaves.
It happened a long time ago. A lot of groups of people have been enslaved or been killed by other groups.
Time for them to get over it.
As fior the cop that killed the guy. No one condones it, not even the cops. but lets riot