Political correctness exists everywhere, from Pinochet's Chile to Mussolini Italy to Thatcher's UK and Mao's China. It simply speech that is politically okay. It doesn't automatically entail "We can't do sunspot research" for everyone, it just means "This doesn't fly because it goes against our ingrained ideals". Political Correctness would ALWAYS exist. It wouldn't be PC to demand Washington to become King, or for George III to abdicate. Nothing more, nothing less. A 'free speech' state defense doesn't work because we already have limits on Free speech - fire in a theatre, death threats against the president, libel or slander laws. PC now ontop of that is more often than not just a way to offer updates to common lexicon (the fading out of slurs, the rising of uncommon labels) and little else.