Good point. Can anyone find out the "thugs" name?
Far as I am concerned this guy had no business removing the heckler, police or security should have been there to take care of it. That said, I sure as heck am not going to condone heckling at anyone's speeches.
Well, we already know he's with the Sheetmetal worker's union. A cursory review of their dues-paying members in that area would reveal the attacker's name in very little time.
Or you could appeal to people's decency or greed and just offer a cash reward for information leading to the arrest and conviction of the attacker. That always greases the skids.