The Emmanuel Goldstein of the 20th and 21st centuries, political correctness is a multi-headed hydra that is supposedly dedicated to destroying Western civilization and squees everywhere.
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.
Anne is so politically correct! I can't believe she got mad at me for calling her a 'n*gg*r b*tch'!!!1
Political correctness will destroy our nation! Somehow!