> Why is everyone responding to this thread going right to Mein Kampf?

Because they're riding a political hobby horse, insisting that the only valid defense of 1A (free speech) is to demand a figurative repeal of 3A. i.e. to require librarians to quarter the enemy's troops in their house. Because apparently the only valid measure of how free your speech is, is how much you tolerate some of the most censorious regimes in history.

Enemy troops?

Tolerance of censorship?