Even if it were the case that political correctness was totally confined to campuses, it would not make the phenomenon unimportant. Colleges have disproportionate influence over intellectual life, and political movements centered on campuses can spread well beyond them (anti-Vietnam began as a bunch of wacky kids, too). But to imagine p.c. as simply a thing college kids do relieves us of taking it seriously as a coherent set of beliefs, which it very much is. Political correctness is a system of thought that denies the legitimacy of political pluralism on issues of race and gender. It manifests itself most prominently in campus settings not because it’s a passing phase, like acne, but because the academy is one of the few bastions of American life where the p.c. left can muster the strength to impose its political hegemony upon others. The phenomenon also exists in other nonacademic left-wing communities, many of them virtual ones centered on social media, and its defenders include professional left-wing intellectuals.

The upsurge of political correctness is not just greasy-kid stuff, and it’s not just a bunch of weird, unfortunate events that somehow keep happening over and over. It’s the expression of a political culture with consistent norms, and philosophical premises that happen to be incompatible with liberalism. The reason every Marxist government in the history of the world turned massively repressive is not because they all had the misfortune of being hijacked by murderous thugs. It’s that the ideology itself prioritizes class justice over individual rights and makes no allowance for legitimate disagreement. (For those inclined to defend p.c. on the grounds that racism and sexism are important, bear in mind that the forms of repression Marxist government set out to eradicate were hardly imaginary.)…

That these activists have been able to prevail, even in the face of frequently harsh national publicity highlighting the blunt illiberalism of their methods, confirms that these incidents reflect something deeper than a series of one-off episodes. They are carrying out the ideals of a movement that regards the delegitimization of dissent as a first-order goal. People on the left need to stop evading the question of political correctness — by laughing it off as college goofs, or interrogating the motives of p.c. critics, or ignoring it — and make a decision on whether they agree with it.