Nadine Strossen discusses the “Weimar Fallacy.” Strong hate speech laws prior to WWII in Germany shoved hate speech underground, out of sight, where it festered and grew. The better alternative would be to let the people say their hateful things out in the open market where their ignorance will be forced to engage with ideas that are better than hate. Strossen explains:

For more on this topic, see Greg Lukianoff’s article, “Would censorship have stopped the rise of the Nazis.”