Free speech and its limitations are on Americans’ minds. In the past year we’ve seen Nazis and white supremacists rally in our cities, angry protesters chase provocateurs off of college campuses, a comedian wield a bloody effigy of the president’s severed head, and slurs and overt racial animus made a staple of political discourse. Controversial speech has people talking about what restrictions, if any, society can enforce on words we despise.

That inquiry isn’t inherently bad. It’s good for citizens to want to learn more about the contours of our constitutional rights. The dilemma is that the public debate about free speech relies on useless cliches, not on accurate information about the law.