Who is Arturo Gamboa? Armed man at Kings Day protest fired at by peacekeeper; bystander killed

During a "No Kings" protest in Salt Lake City, a peacekeeper opened fire on a man who raised a rifle toward the crowd, tragically killing a bystander. The incident led to panic and a police investigation into the man's motives and the peacekeepers' training. Separately, in Riverside, California, a driver struck a protester and fled the scene.