On tonight’s half time show, Bob Costas took the entirety of his weekly bit of canned moralizing to quote approvingly from a Jason Whitlock article on the murder suicide of Chiefs linebacker Jovan Belcher (who shot his girlfriend, then drove to the Chiefs’ facility and shot himself, leaving behind a 3-month-old daughter), citing as the cause of the crimes the availability of handguns, essentially demonizing those who somehow manage —