This is the kind of political correctness I remember growing up with: Texas plans to change the study of slavery in school books with the study of "Atlantic triangular trade."
The NY Times calls it "archconservative political strong-arming," but it's just the basic southern mind-washing I remember so well. It's very widespread, in a way that leftist PC never was. Political correctness was, in fact, mainly invented by the right to ridicule criticism aimed at the right.
And what do you know - near the end of the NYT article, a conservative tells a textbook publisher, "We want stories with morals, not P.C. stories."
I rest my case.