As a society, at least in the United States, we've decided that the free flow of ideas is more important than creating censor or ban lists for ideas. It goes hand in hand, in particular, with freedom of religion, a core tenant of the United States.
This list has a vanishingly small list of exceptions.
The fact that the list of exceptions exists at all implies that the US recognizes the paradox of tolerance, it just happens that the bar for intolerable speech in the US is lower than elsewhere. But American freedom of speech still doesn't meet the bar you set in your earlier comment. I'm still not allowed to stand on a soapbox at the town square and organize a mob to kill the President.
This list has a vanishingly small list of exceptions.