Excessive political correctness does that. A good amount of political correctness means that you never have to work for a manager who openly respects you less because of your race or gender.
BTW: A manager who's secretly a racist is still a racist. PC doesn't make this any better.
Saying "some political correctness okay" is equivalent to saying either "some irrational groupthink is okay", or "some cultural marxism is okay". What's worse than this general confusion, is then implying that it's the same thing as caring about human rights or the right not to be discriminated against. Thus it makes caring about human rights something to be ridiculed. But only when you defend the use of the term.
The term "political correctness" is only an insult. Defending it at all is like defending some insult you're given on a playground.
"You're a poop head!"
"Yeah, well... I *want* to be a poop head!"
"Politically correct" has enjoyed non-pejorative use for decades.