I think you’ve misjudged me and my post.
I don’t think I’ve misjudged this:
“In this particular instance, the police had a good reason to tell him to leave, to avoid a physical disturbance and incite the crowd to violence.”
So his constitutional rights being taken away are to “protect him”. Nice.
Constitutional rights are there as long as a large group of people who are acting illegally don’t like it.