NEW YORK (AP) — A bystander's video proved pivotal in the filing of a murder charge against a South Carolina police officer, and also rekindled a fervent national discussion about the use of body cameras by police officers.

The White House seized on the case to make a pitch for wider use of such cameras. So did New York Mayor Bill De Blasio, whose city has experienced wrenching controversies related to police use of force.

And in North Charleston, South Carolina, where a white police officer fatally shot an unarmed black man in the back, Mayor Keith Summey said Wednesday that every uniformed officer on patrol will get a body camera. The mayor says the city already had ordered 101 cameras, and is ordering 150 more in the aftermath of the shooting.

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