All this would have been avoided if both parties of sensible ppl walked away from the keyboards and let the racists from each groups go at each other. Yes you heard right! there are ignorants from both groups, whether it's cheap digs at famine victims or jokes about slavery both groups can be guilty.
Lets not take the Israeli ground here and pretend one group is an angel while they demonise others. All groups are flawed, all can be ignorant. I've met individuals from all groups and got on with them fine and also met really racist individuals from all groups. My advice to AA's and Africans or any other decent person from any group would be to keep it moving and ignore trolls online.

Don't pocket watch ppl online. Don't get jealous of ppl stupid enough to post their private lives online and don't envy what ppl do with their lives and who gets with who and you'll be better off and more positive.