Obama will try to put a lid on this. If there's rioting, people getting injured, property getting torched, and Obama does not come down HARD against the rioting, then he is done. If the voting public decides that he will not oppose black rioters just because he feels more loyalty to them than to the country as a whole, then he is done.
He has treated our allies poorly and has demonstrated his loyalty to Islam repeatedly but the public accepts it.