Yelling "fire" in a crowded theater and immediate incitement of violence are not allowed in the US either.
Actually you likely can
https://www.theatlantic.com/national/archive/2012/11/its-tim...
https://www.popehat.com/2012/09/19/three-generations-of-a-ha...
[1] https://en.wikipedia.org/wiki/Threatening_the_President_of_t...
Is also illegal