“First of all, enumerate the Constitutional right that was violated.”
First amendment.
And why did they (the mob) have a right to be there, but he didn’t?
The police did no such thing. He was still expressing his opinion, as the shirt clearly did, when he arrested.
It wasn’t a matter of a right to be there, it was a matter of safety, his, and protecting property.
If you’ve ever had your stores windows broken out because some idiots thought right in front of those windows would be a great place to settle their differences, you’d understand.
Congress shall make no law? Local cops.