[pnw_hazor]

In the US, there is no prior restraint that prevents one from doing the things in your list.

If expressions are deemed unlawful after-the-fact and via due process, the speaker may be punished.

It is anti-freedom to bar expression w/o adjudication or due process. E.g., alleged threats or alleged defamation are protected speech until a court determines them to be unprotected. Emergency injunctions or the like may be temporarily enforced if the court feels it is likely that the expression in controversy will be found to be unprotected speech.

Also, courts can issue narrow and temporary gag orders but they are limited and specifically targeted for reasons unrelated to the viewpoint of the speech.