There is a good American Thinker piece on slanted college textbooks in ethics.
The first example concerns an ethics text that treats John Rawls as having settled matters with respect to justice. Students are told that it simply is not fair that some people have better natural attributes than others. Workers who are more productive are that way due to no merit on their part, so less productive workers who are passed over for promotion have just grievances. The Rawlsian analysis has been battered like a pinata, but there it is, presented to undergrads as if it were a proven scientific fact.