More resources - this is a pretty exhaustive list of First Amendment cases and also notes some of the cases that the Supreme Court chose not to hear.
The First Amendment Encyclopedia at MTSU
Two very recent cases that pop out are
Kansas v. Boettger and Kansas v. Johnson (2020), where:
"The U.S. Supreme Court
declined to review two decisions from the Kansas Supreme Court that had invalidated two true-threat convictions when it ruled the law used to convict the individuals was unconstitutional under the First Amendment.
However, Justice Clarence Thomas dissented from the denial of certiorari, arguing that the high court should take up the case because the Court’s ruling in
Virginia v. Black (2003) contained language about unprotected
true threats that has been interpreted differently by lower courts."
The threats in these two cases were made to family members and not towards a broader community.
Still, this is a reminder that there is a long dialogue with the state Supreme Courts; states' rights are a big deal here. And it's interesting to look at what The SC has chosen not to hear over the years. So, if and when there are protests all around the country, there may be a range of debates that spring out of this issue.