CHICAGO, IL - DECEMBER 01:  Demonstrators protest outside the office of Mayor Rahm Emanuel at City Hall following press conference where the mayor announced the firing of Chicago Police Superintendent Garry McCarthy on December 1, 2015 in Chicago, Illinois. McCarthy has been under fire since the release of a video that showed Chicago police officer Jason Van Dyke shooting and killing 17-year-old Laquan McDonald, hitting him with 16 bullets on October 20, 2014. McCarthy, Emanuel and Cook County States Attorney Anita Alvarez have been accused of trying to cover up the shooting.  (Photo by Scott Olson/Getty Images)