Usually, a politically correct person is who dares to point out racism, homophobia or sexism and/or uses inclusive language (i.e. African-American, et al). You may think that the former is admirable and the latter well-intentioned, if a bit silly, but most right-wing pundits don't think so.
That's probably because after the 1960s, right-wingers everywhere decided that the best way to get people on their side was to pretend to be oppressed by PC fascist goons who were in league with the Soviet Union.
The only good kind of politically correct language is the type used by armies and CEOs, such as "collateral damage" instead of "massacred civilians"; "ethnic cleansing" instead of "wanton genocide", "creative accounting" instead of "fraud", and "corporate shrinkage" instead of "firing lots of workers to save money."
You can fight the seven-headed politically correct hydra by speaking without thinking, never learning from your mistakes and refusing to back down or apologize.
Political correctness will destroy our nation! Somehow!
2. Politically correct term for politically justified fascism.
3. State of eternal purgatory that would exist if the entirety of the universe were "politically correct", as nothing could possibly exist (alluded to by Jimbo in South Park, when he explains that the word "nay" could potentially be offensive to horses).
2. 'I considered myself to be a politically justified fascist, but was told that calling myself that could potentially be offensive to others who possessed similar beliefs. So, now, I am a "politically correct individual".'
Ironically enough, when you label them with justifiable terms as "racist", "homophobe" or "bigot", they'll cry, bitch and whine that they're not and cover over it by saying that they're not "racist" and that you're just being "oversensitive", which is actually a form of "political correctness"...the very thing that they hate (totally not hypocritical!).
These are the same people who are under the impression that their freedom of speech rights are being legally taken away by Poltical Correctness, when the reality of the situation is that these people were stupid enough to bow out to FUCKING PEER PRESSURE.
You get what you deserve, assholes. Don't whine about "political correctness" impeding on your freedom of speech, whine about your lack of testicles and how you bowed out to societal pressures like little bitches! THAT is what restricted your freedom of speech.
These people claim that those who whine about "political correctness" are crybabies, but these idiots are no better.
2. Other times it's just over-sensitivity to certain things.
Dumbshit: Dude, did you see me curbstomp that nigger?
Intelligent Person: You're a racist piece of shit.
Dumbshit: Dude what's with the political correctness? I'm not racist, you're just "oversensitive".
Intelligent Person: No amount of crying "PC" and calling me "oversensitive" won't save you on this one, you're a racist piece of shit. Deal with it.
Dumbshit: *Cuts himself to crappy Emo music*
Depraved moron: Dude, did you see that gay dude prance around in his pink shirt? He's such a fucking faggot!
Intelligent person: You're a homophobe.
Depraved moron: That's offensive to me!? I'm not a "homophobe" you're just being politically correct!
Intelligent person: ...You worthless hypocrite. *Sprays the douchebag with a flamethrower*
EXAMPLES FROM DEFINITION #2:
Hyper-sensitive person: That person over there has a severe weight deficiency.
Normal Guy: Huh? All I see is some fat dude.
Hyper-sensitive person: Don't say that! It's offensive.
Normal Guy: *Rolls his eyes* You've got to be kidding me.
Normal person: HEY! Merry Christmas!
Hyper sensitive: I think the term you're looking for is "Happy Holidays".
Normal Person: Whatever...call it what you want, I'm getting presents anyway.