Hello Dutch Uncle,
This hatred came out of the South, born of guilt over what was done to the slaves, and denial that it was the wrong thing to do after the South was forced to free the slaves.
Oh, they freed them alright. But nobody could make them be nice to them or treat them like any other full class citizen. The hatred has been handed down from generation to generation. It has morphed along the way into what we have today.
It's time to end it.
Long before Breonna there was Emmitt Till.
It's all the same.
And it needs to end.
Hate begets hate. If you want to hate all Southerners, no one can stop you.