One of the things most consistently infuriating about discussions of american policy on HN is how firmly committed we are overall to not reckoning with this. This is very recent history, they didn't just admit defeat or become wholesome ex-segregationists for the most part. The policies continue to have effects, and the intergenerational nature of wealth imbalance means even if they didn't we'd still expect to see consequences into the present.
I jokingly refer to the way the civil rights era is taught to elementary school children as "and then the last racist killed MLK." I don't think that's necessarily even an inappropriate way to first bring it up with young children. But I wish people here expected more of themselves.