The Spanish language television news network Univision unleashed a bombshell investigative report on Operation Fast and Furious Sunday evening, finding that in January 2010 drug cartel hit men slaughtered students with weapons the United States government allowed to flow to them across the Mexican border. “On January 30, 2010, a commando of at least 20 hit men parked themselves outside a birthday party of high school and college students in Villas de Salvarcar, Ciudad Juarez,” according to a version of the Univision report in English, on the ABC News website. “Near midnight, the assassins, later identified as hired guns for...