

Usa has never tried to break with their own slavery/racism in the past. They have not admitted that it was wrong what they were doing, and that they will never do it again. Therefore it is still there and it remains strong.
Although there are many who frown on racism today, it is only on the surface, only a show.
It is like a law of nature: when you (as a people) have not learned from history, then you are bound to repeat it.
Hail WOPR!