FERGUSON • Police officers here began wearing body cameras on Saturday as marchers took to the streets in the most recent protest of a shooting three weeks earlier .

Ferguson Police Chief Tom Jackson said his department was given about 50 body cameras by two companies, Safety Visions and Digital Ally, about a week ago. The companies donated the body cameras after the fatal shooting on Aug. 9 of Michael Brown Jr. by Ferguson Officer Darren Wilson.

Company representatives were at the police department on Saturday training officers to use the devices, which attach to uniforms and record video and audio. Some members of the police department have been specially trained on the devices’ use.

“We are still playing with them,” Jackson said.

The cameras are being assigned to squads, and each officer will get one to use, he said.

Jackson said the officers had the devices on during the protest march on Saturday and were able to capture video images of crowd members taunting officers.

“The quality is good,” he said.