Picture a guy walking down the street. Every time this guy happens to spy a police officer, he screams out, “Cops are liars! Cops are scum. I hate cops!”  One might well question his sanity, as it’s rarely a good idea to go out of your way to antagonize a police officer.

But if that’s what the guy wants to do, it’s his right.  The First Amendment says he can express his views about cops whenever he wants, right?  Well, maybe.   ...