I’m not going to provide you a link. I find it amusing, really, that your reaction to your own regional history comes as such a shock to you. It would do you good to research it on your own and learn that you, indeed, can’t afford to stake your claim on some kind of (non-existent) moral ground.
A piece of cloth means a lot to you. And yet many blacks, upon going north, found themselves the object of more virulent hatred than they ever experienced in the South.