The modern-day surveillance was an extension of a previous plan; according to the Sun-Times, the police department has been monitoring the actions of Black liberation groups since Michael Brown -- an unarmed Black teenager -- was fatally shot by White police officer Darren Wilson.
Over the weekend alone, seven people were killed while 30 were wounded.
The 2012 video released Monday evening shows police using a Taser on Philip Coleman, 38, who later died. The footage comes in the wake of protests that erupted in the city after both the Laquan McDonald and Ronald Johnson videos were released in the past month.
