I suppose when you tell people it is all their fault, and they don't agree, they find it hard to let go.
I approach this in a very simple manner...There was a war which was meant to settle this once and for all. The war was fought and when the dust settled, the north had won. Regardless of everything else, that should be the final word. However, some people still cling to it for some reason...they refuse to just let it go and move on...
News flash for everyone...it's 2003...By now, we should be working towards equality and realizing how ignorant slavery was in the first place...