Because people who talk about "political correctness" as if it's this horrible thing are really just whining that the rest of the world doesn't feel like silently tolerating their asshole opinions. It's always some big drama production, too. The rhetoric is always stuff like how they are "under attack" by the "PC police," or "censorship," or even hung. The reality is that "PC" is just another aspect of freedom of speech. It's just people expressing their opinion about someone else's opinions or actions. But if it doesn't go your way, I guess that's just not fair.