“...in 2004, Al Franken emerged from a crowd and body-slammed a guy who was trying to shout down then-Governor Howard Dean.”
True. He even bragged about how he did it: http://nypost.com/2004/01/27/al-franken-knocks-down-dean-heckler/
Al Franken has a long history of getting high and/or drunk and assaulting people whose politics he doesn’t like. The victims don’t give it back to the punk because they don’t want to lose everything they have defending themselves in a frivolous lawsuit. It’s easier to just take a punch and go down. I hope that asshat gets hit by a 200-lb meteorite.