A quite extraordinary event played out at a Wilco show on October 16th. A guy from the crowd jumped onstage and laid a hand on leadsinger and band-maestro Jeff Tweedy while he was in the middle of a song. What happened next? See for yourself here. And get Tweedy's explanation here.
Now, don't get misled by the ongoing internet discussions. This case is clear-cut. The guy from the crowd was an obvious jerk (this happened in Springfield... go figure) and it is totally understandable that Tweedy got quite a chok. All hail Wilco.