President Trump on Monday threatened to deploy federal troops if state and city leaders don’t act to quell acts of violence and looting amid the protests over the killing of George Floyd. Moments earlier, just outside the White House, federal authorities used rubber bullets, flash bangs and gas to clear peaceful protesters from the area. Then Trump, who walked across Lafayette Square to St. John’s Church, where a fire was set Sunday evening, held up a Bible and nodded to media cameras and posed for photos.