A police body camera is seen on an officer during a news conference on the pilot program involving 60 NYPD officers dubbed 'Big Brother' at the NYPD police academy in the Queens borough of New York, December 3, 2014.  REUTERS/Shannon Stapleton (UNITED STATES - Tags: CIVIL UNREST CRIME LAW SCIENCE TECHNOLOGY) - RTR4GL8H
iShannon Stapleton/Reuters

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