Comment by da_chicken

The prohibition against inciting violence has nothing to do with whether or not the speaker is a government entity.

Indeed, I think you should look at the speech that SCOTUS ruled is protected in the landmark Brandenburg v Ohio[0] case to see how extremely narrow the "imminent lawless action" standard is. It's ridiculously hateful and inflammatory, and filled with several non-specific threats of violence against minority groups. This was labelled protected speech. Brandenburg was a private citizen here, and he prevailed over the state of Ohio.

[0]: https://en.wikipedia.org/wiki/Brandenburg_v._Ohio