CHICAGO, IL - DECEMBER 29:  Chicago police officer Jason Van Dyke leaves the Criminal Courts Building after pleading not guilty to first-degree murder charges related to the shooting death of 17-year-old Laquan McDonald on December 29, 2015 in Chicago, Illinois. Van Dyke shot McDonald 16 times while on duty responding to a call of suspect with a knife in October 2014. Several protests have erupted in the city following the release last month of a dash-cam video showing the shooting. Van Dyke is currently suspended from the police department.  (Photo by Scott Olson/Getty Images)