It also means it's a good time to quote Frantz Fanon's book Black Skin, White Masks, where the author says, “Sometimes people hold a core belief that is very strong. When they are presented with evidence that works against that belief, the new evidence cannot be accepted. It would create a feeling that is extremely uncomfortable, called cognitive dissonance. And because it is so important to protect the core belief, they will rationalize, ignore and even deny anything that doesn't fit in with the core belief."
These lines were written in 1952, but somehow, just somehow, they seem dead on today.