Has anyone ever been told something by family member about a relative that turned out to be not entirely true? Did cannibalism exist in New Guinea during WWII? Yes. So, is that really racism? If someone said something negative about the US having slavery in the 1800's, would you call that person a racist? That sounds a lot like the anti-CRT mob.
Now, compare that to Trump talking about not wanting immigrants from "sh*thole countries".