[See video cross-posted at NewsBusters.] ABC's David Wright is obsessed with Sarah Palin. The Nightline correspondent on Wednesday gratuitously attacked the former vice presidential candidate in a segment that has nothing to do with politics. Wright investigated angry, violent coaches of youth sports. After featuring clips of men encouraging third grade football players to hit each other in the head, Wright made an abrupt left turn into liberal bias: "That full-throated passion, part of the culture of sports in this country. Lampooned in movies like Kicking and Screaming and celebrated by the original hockey mom herself, Sarah Palin, in 2008."