Political correctness is not about truth. It is about not offending people. If idiots are offended because they take a phrase the wrong way or associate the wrong history with it, they are still offended. Political correctness deems changing the term.
I agree with one exception. In the liberal/socialist playbook, there is nothing wrong with offending those who have perpetrated massive evil on the world. You know, all those right wing dunces who believe in God, capitalism, and the American way.