people who think he shouldnt of been tazerd are idiots.
he was disrupting a public event which is enough to be removed from the place. he then resisted and faught against the cops when they tried to escort him out. he then resisted them when they were going to arrest him, and started manuvers to get out of the cops hands and likely run free. then they said if he doesnt stop and doesnt let them do their job he's goin to get tazered. which, as you can tell, he kept resisting.
if anything, the douchebag was 100% in the wrong here, and the cops were just doin what they could to stop the disruption.