Why diversity on the front lines of policing isn't enough

Maryland state troopers
The shadows of Maryland state troopers standing guard on the ground near a CVS pharmacy that was destroyed during rioting after the funeral of Freddie Gray, on April 28, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 and died a week later in the hospital from a severe spinal cord injury he received while in police custody.
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