The man Utah police describe as an innocent bystander slain after gunfire broke out has been identified as Arthur Folasa Ah Loo.

A man who was believed to be part of a peacekeeping team for the “No Kings” protest in Salt Lake City shot at a person who was brandishing a rifle at demonstrators, striking both the rifleman and a bystander who later died at the hospital, authorities said Sunday.

An "innocent bystander" was killed after being caught in the crossfire in a shooting at the "No Kings" protest in Salt Lake City, authorities said.

A person shot and killed an innocent bystander during a “No Kings” protest in Salt Lake City, Utah on Saturday.

Police say Ah Loo was an innocent bystander caught in the line of fire between peacekeepers and a man with an AR-15-style rifle.

Arthur Folasa Ah Loo, the man who was shot and killed at a “No Kings” protest in Salt Lake City, appeared in four episodes of the 2017 season of “Project Runway."

Arthur Folasa Ah Loo, 39, a Samoan-born fashion designer, was participating in an anti-Trump protest in Salt Lake City on Saturday when he was shot by a man working security, the police said.

The fashion designer was among 10,000 protesters who occupied downtown Salt Lake City for the “No Kings” protest.

Josiah Paul says he attended today’s No Kings protest in his hometown of Coeur d’Alene, Idaho, as a peacekeeper rather than a participant. He wandered the crowd clad head-to-toe in tactical gear, which included a firearm,