The volunteer fired three rounds at Arturo Gamboa, 24, who allegedly brandished a rifle at Saturday's crowd. The gunshots hit both Gamboa and a bystander, Arthur Folasa Ah Loo, police

A demonstrator was shot and killed at Salt Lake City’s “No Kings” protest when a man believed to be part of the event’s peacekeeping team fired at another man allegedly aiming a rifle at protestors, authorities said Sunday.

Arturo Gamboa, 24, was taken into custody by law enforcement officers, after allegedly pulled out his rifle during an ongoing ‘No Kings’ protest rally in Utah.