The Secret Service appears to be playing politics by ignoring threats of riots and violence against Republican presidential candidate Mitt Romney made by leftist filmmaker Michael Moore and the liberal group MoveOn.The threat was made via a web ad video released earlier this week in which Moore and MoveOn hide behind elderly women who make scripted terrorist threats against Romney and the nation over the presidential election.One woman is shown inciting riots if Romney defeats Democratic party President Barack Obama, “I want the Republican party to know, if your voter suppression throughout this beautiful country enables Romney to oust Barack...