If a post-Constitutional American highwayman were to waylay a traveller with the threat of, "your money or your life!" and he (or she) were to be subsequently brought to trial, the First Amendment would not be a defense.
While you --or I-- can say deeply offensive words that hurt feelings, and vex the listener and our horrible speech is protected by the First Amendment, a threat to kill someone as an inducement to comply with a demand is not protected speech.
The opinion of the United States Court of Appeals Third Circuit with regard to an appeal of a conviction under a cyberstalking statute was filed on June13th, 2022. So, it is recent and topical, and probably relevant to other spoken and written threats in circulation.
The convicted cyberstalker hoped that he could successfully argue that the cyberstalking statute (under which he was convicted) was unconstitutionally broad... over broad.
It is also a compelling read.
All the best,