And I realize this isn’t in the US, obviously. But I think that the idea that the government shouldn’t be able to ban people from saying things, or compel them to say things, is so baked into the American zeitgeist (of which I am a member), that it feels wrong in a fundamental moral sense when it happens.
It’s the old, “I don’t agree with anything that man says, but I’ll defend to the death his right to say it,” thing.