Political Correctness is otherwise. It seeks control.
If I say something, you censure it as politically correct, how then is that not seeking to control my speech? The interesting thing about the term is that it started out in leftist contexts where somebody's rhetoric would be labeled politically correct as a censure that the person was just parroting ideas without actually understanding them. But, now it has mainly be adopted by the right as a way to control speech that involves ideas that are at variance with those who wish to censure.
What most people dismiss as PC, I think falls under the old-fashioned concept of being polite. It really does not matter to me if you want to shout blasons populaires in a crowded theater. Go for it. Another thing termed PC is euphemism. Again, if you want to say somebody croaked to their widow, that's your prerogative, but I'll err with a little euphemism.