Christ, what an idiot.
However, the people who thought about filming and taking photos and did not actually call neither the staff nor cops if the guy was not willing to come to his senses (the zoo obviously wasn’t aware of it until now) should be prosecuted along with the idiot parent. What were they waiting for? To not miss a chance to have a gory facebook/youtube “viral” ??? 
What in the world is wrong with these people …