You seem to be of the mistaken impression that all the things blacks in the South suffered were specifically at the hands of whites. What northern history likes to conveniently cover up are the actions of all those members of the black aristocracy were just as bound and determined to maintain the old order, and who were so willing to sell their own down the creek without a paddle to do it. I have yet to see all these historians castigate these people, many of whom still dominate black high society in the Southeast.
BTW, I think that the black aristocrats are generally a heroic group in black history. It was their genius that created hundreds of schools, colleges, fraternal organizations, and other instiutions of self-help and mutual aid.