He's Jewish so I don't know why he would degrade himself like that. Jewish people get made fun of all the time. Also in history Jewish people have been persecuted many times. They are immigrants and started their communities. Maybe he feels like he needs to get back at people by making fun of them.
Only reason he didn't get hurt is because he had cameras (even though u can take the cameras n shit, u never know when they're taping), and he walked up to older people. It's not like he walked up on the drug spot with 20 kids on the corner with his cameras.
If I got a chance to do it where he had no cameras and no one around, I would beat the shit out of him.