Yet what, precisely, is political correctness? It is totalitarianism — promoted as morality.
Thus one is not merely wrong for challenging the progressive status quo on same-sex marriage, transgenderism, “white privilege,” illegal immigration, global warming, “hate speech,” or a host of other leftist causes. One is evil, and the “appropriate” label defining what particular evil is applied: homophobic, transphobic, racist, nativist, anti-science, fascist, etc.
Labeling one as evil as opposed to wrong is critical. Wrong leaves room for debate. Evil makes debate unnecessary — and entrenches the progressive default position as a result.
The right thinks the left is mistaken.
The left thinks the right is evil.