Firearms are legal in Texas. One person committed violence. Others got 50 years for being at the same protest. Another got 30 years for picking up his own box of zines.
The First Amendment was written by people who experienced this same chilling of free speech.
Unfortunately, people have thrown out all pretense of caring about proper justice or first amendment rights. There really isn't any point in arguing with them because they'll continue to make spurious associations or illegitimate defenses as to why their enemies deserve to be locked up for life.
They are not legal in commission of a crime.