New York City Police Commissioner Bill Bratton announced today that his department will begin a trial of body cameras on 60 officers working in six of the New Yorks most violent neighborhoods. The NYPD says that the cameras are being tested in response to the controversy over its Stop and Frisk policies, the practice of routinely stopping, questioning, and patting down civilians who officers consider suspicious but who have not committed any overt crime. Civil rights groups have challenged this policy in court, and the NYPD has recently moved to reduce the frequency of Stop and Frisk after a judge declared the practice unconstitutional.