Ordinarily, one wouldn't judge a Christmas movie by the quality of its on-screen kills. But as yet another volatile year draws to a close, you might find yourself taking a measure of vicarious satisfaction in the spectacle of a red-suited, hammer-swinging, skull-crushing hero smiting his enemies. That hero, of course, is Santa Claus in "Violent Night," a surprisingly festive action comedy from Norwegian director Tommy Wirkola ("Hansel & Gretel: Witch Hunters").
