Former Chairman of the Joint Chiefs of Staff Mike Mullen broke his silence Tuesday to say he was 'sickened' by the use of U.S. National Guard forces to push protesters out of Lafayette park to make way for President Trump's photo-op. 'I am deeply worried that as they execute their orders, the members of our military will be co-opted for political purposes,' Mullen warned. 'I have to date been reticent to speak out on issues surrounding President Trump's leadership, but we are at an inflection point, and the events of the past few weeks have made it impossible to remain...