Cellphone videos have increasingly been used to hold police to account. But the ability to livestream and share video of violence in real time is now being described as a watershed moment for video evidence.
Missouri lawmakers have approved a bill that blocks the release of footage from officer-mounted cameras until after an investigation is complete.
The parents of Deven Guilford, 17, claim their son's civil rights were violated during the stop which began when the teen flashed his headlights at an officer's patrol car.
LA will be the first big city to install mandatory officer-mounted cameras in an effort to repair frayed relations between police and the community.