One star off for the message at the end. Did they honestly think that just because a policeman has a sweater on, that someone would be "deceived" by "appearances"?
The badge is what makes him a cop. If you subscribe to the "cops are the enemy" school of thought, you're an idiot for getting fooled by a sweater. Also you're probably just an idiot anyway, so maybe I repeat myself.
I'm pretty sure the point is that he was seen around the protests undercover without his badge on, so they were letting people know he is actually a cop. So when he dares you to throw that brick through that window, you should ignore him.