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Police refuse to release video of shooting deaths, sparking protests

The shooting of Jamar Clark in Minneapolis and the death of Laquan McDonald at the hands of Chicago police underline the role of video in criminal probes.

A police officer talks with demonstrators in front of a north Minneapolis police precinct during a protest in response of Sunday's shooting death of Jamar Clark by police officers in Minneapolis, Minn., Nov. 18, 2015. (Photo by Craig Lassig/Reuters)
A police officer talks with demonstrators in front of a north Minneapolis police precinct during a protest in response of Sunday's shooting death of Jamar Clark by police officers in Minneapolis, Minn., Nov. 18, 2015. REUTERS

Trymaine Lee

Trymaine Lee is an NBC News correspondent.