Do Police Body Cams Work?

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One thing President Obama is calling for is 50,000 police officers to be outfitted with body cameras that record their every move. Have these cameras been tested, how well do they work, and could they help prevent another Ferguson?

Credits

Guest:
Michael D White - Arizona State University

Host:
Madeleine Brand

Producers:
Andrew Walsh, Christian Bordal, Matt Holzman, Jolie Myers, Anna Scott