Let’s say you were an authoritarian who sought to weaken American democracy. How would you go about doing that? You’d probably start by trying to control what people say and think. If citizens dissented from the mandated orthodoxy, or dared to consider unauthorized ideas, you’d hurt them. You’d shame them on social media. You’d shout them down in public. You’d get them fired from their jobs. You’d make sure everyone was afraid to disagree with you.

