Minus the lone guy who kicks him square in the head while he's down, I'd have to agree. Most people just seem slightly annoyed or curious rather than angry.
I'm no doctor, but I would diagnose this man with a bona-fide case of the crazies.
Too much fine motor control expressed while jumping on cars (1:51 seemed intentional & extra funny because of it), and persistence in chasing that one guy to be plain old drunk I think.