All of those "crimes" result in a ticket, not the person in question being hauled off to jail, and they typically aren't enforced on protestors. The government

All of those "crimes" result in a ticket, not the person in question being hauled off to jail, and they typically aren't enforced on protestors. The government could direct the police to crack down, but that would just throw any pretense of evenhanded enforcement of the law out the window, and harden the protestors' resolve.