The hired security guard accused of shooting a protester dead during a Denver rally on Saturday was identified by police as Matthew Robert Dolloff. Dolloff, 30, is being held in connection to a first-degree murder investigation in the shooting, the Denver Police Department announced on Sunday. Family members said the victim was Lee Keltner, a military veteran. Officials said Dolloff has not yet been charged. He is being questioned about the shooting, which was captured on camera. The shooting happened at a pro-President Donald Trump rally that was disrupted by people with Black Lives Matter and Antifa, who had planned...