CHICAGO, IL - DECEMBER 11: Demonstrators march through downtown on December 11, 2015 in Chicago, Illinois. A recently released video showing the shooting of Laquan McDonald by Chicago Police officer Jason Van Dyke has sparked protests and calls for Mayor Rahm Emanuel and Cook County State's Attorney Anita Alvarez to resign for trying to cover up the circumstances surrounding the shooting. (Photo by Scott Olson/Getty Images)
