Re: "I just wonder why people bring up the fact that there were blacks that owned slaves in the South as if that changes anything."
Because it is interesting, counterintuitive, ironic. It is just the sort of thing that makes history a passion for some people. I hated history in High School because all life was rung out of it. This is life it has twists and turns that are unexpected. Hollywood makes millions selling stories to people who want entertainment. Fictions writers make millions selling fake stories to people. Here is real life for free and it belongs to all. Why would we want to know about it.
You have a point. History is fascinating and best pursued on one's own time. I had a very good history education in school but nothing like reading on your own.