How easily you hate people based on race, and condemn them for the sins of people they never met and aren't related to. Do you think it's ok just because it's people of a color it's fashionable to hate? Yes, all these things were terrible. Literally every culture in history has been gleefully homicidal, and pretty much wherever it was convenient, genocidal. A less hysterical and more constructive way to look at it is that the US, from it's very early days, has tried, and made great strides, in getting better than its barbaric origins, and in fact, lead the world in this direction. The children of each generation have been more and more civilized. I remind you, it was also abolitionist whites who recognized that they system they'd inherited was evil, and lead the the Union into the bloodiest war in our history to end slavery. They were the children of generations of outrageous racism and rebelled against it. And don't tell me it wasn't about that. "As He died to make men holy, let us die to make men free" was literally their marching song. People lose perspective. I'm not that old, and I remember when all kinds of outrageous racism, sexism, and gender-oriented nonsense was totally acceptable. "White" and "Colored" facilities, perfectly fine to beat someone for being gay (even the cops did it,) and anything that today falls under the heading "trans" was widely thought to be abominable. In all the areas you find America falls short, we've made gigantic progress. Remember, these Americans you despise are literally the same ones who voted in and made possible racial equality, gender equality, women's rights, etc. It's not perfect yet, but it's getting better at an accelerating pace that is unmatched in human history.