Thousands protest police shooting in Chicago

Thousands of protesters blocked traffic in Chicago's busy commercial district during the Black Friday shopping extravaganza demanding justice for a black teen killed by a police officer. Racial tensions have soared in the US city over the shooting of 17-year-old Laquan McDonald, for which a white police officer was charged this week with first-degree murder. Graphic footage of the October 2014 shooting has set Chicago on edge and reignited angry debate about the use of force by US law enforcemen