Political correctness is an ever present pollution of public discourse. Resistance to such an abomination, however, should never cease because, in a manner that George Orwell would have well understood, political correctness greatly increases the sloppiness, and dishonesty, of our discussions. The result is that decisions and actions are deeply flawed.
I have been unable to find a source for this definition of political correctness but it sums up the situation well:
'Political Correctness' is a doctrine fostered by a delusional minority, and the mainstream media, which holds forth the proposition that it is entirely possible to pick up a large lump of manure by the clean end.