It is true that liberals and leftists both want to make society more economically and socially egalitarian. But liberals still hold to the classic Enlightenment political tradition that cherishes individuals rights, freedom of expression, and the protection of a kind of free political marketplace. (So, for that matter, do most conservatives.)
The Marxist left has always dismissed liberalism’s commitment to protecting the rights of its political opponents — you know, the old line often misattributed to Voltaire, “I disapprove of what you have to say, but I’ll defend to the death your right to say it” — as hopelessly naïve. If you maintain equal political rights for the oppressive capitalists and their proletarian victims, this will simply keep in place society’s unequal power relations. Why respect the rights of the class whose power you’re trying to smash? And so, according to Marxist thinking, your political rights depend entirely on what class you belong to.
The modern far left has borrowed the Marxist critique of liberalism and substituted race and gender identities for economic ones. “The liberal view,” wrote MacKinnon 30 years ago, “is that abstract categories — like speech or equality — define systems. Every time you strengthen free speech in one place, you strengthen it everywhere. Strengthening the free speech of the Klan strengthens the free speech of Blacks.” She deemed this nonsensical: “It equates substantive powerlessness with substantive power and calls treating these the same, ‘equality.’ ”
Political correctness appeals to liberals because it claims to represent a more authentic and strident opposition to their shared enemy of race and gender bias. And of course liberals are correct not only to oppose racism and sexism but to grasp (in a way conservatives generally do not) that these biases cast a nefarious and continuing shadow over nearly every facet of American life. Since race and gender biases are embedded in our social and familial habits, our economic patterns, and even our subconscious minds, they need to be fought with some level of consciousness. The mere absence of overt discrimination will not do.
Liberals believe (or ought to believe) that social progress can continue while we maintain our traditional ideal of a free political marketplace where we can reason together as individuals. Political correctness challenges that bedrock liberal ideal. While politically less threatening than conservatism (the far right still commands far more power in American life), the p.c. left is actually more philosophically threatening. It is an undemocratic creed.
Bettina Aptheker, a professor of feminist studies at the University of California–Santa Cruz, recently wrote an essay commemorating the Berkeley Free Speech movement, in which she participated as a student in 1964. She now expressed a newfound skepticism in the merits of free speech. “Freedom of speech is a constitutional guarantee, but who gets to exercise it without the chilling restraints of censure depends very much on one’s location in the political and social cartography,” she wrote. “We [Free Speech movement] veterans … were too young and inexperienced in 1964 to know this, but we do now, and we speak with a new awareness, a new consciousness, and a new urgency that the wisdom of a true freedom is inexorably tied to who exercises power and for what ends.”