Not all slave ownership was vicious or bad.
Some, if not many, had decent lives, better then they would have had in their home countries. Slavery still exist in Africa. How many American blacks do, or want to return to Africa? How many had better lives before being freed? Note: My post is not an endorsement of slavery
James Brown acknowledged that he was better off growing up in American than in Africa and that despite what happened in the past to his ancestors, his opportunities were greater here and he was grateful for it.