Salt Lake City police are investigating two self-described "peacekeepers" after a fatal protest shooting left one dead and one injured.

The Salt Lake City Police Department has released new details following a fatal shooting during the “No Kings” demonstration in downtown

Ah Loo — an "innocent bystander," fashion designer and former "Project Runway" contestant — was shot by a member of a "peacekeeping" group who fired at a gunman who had an AR-15 style rifle and who witnesses say was running toward the crowd.

Cities large and small across the U.S. saw crowds gather Saturday for planned "No Kings" protests against President Trump.

The shooting reportedly occurred during a “No Kings” protest in Salt Lake City, CBS News reported ... ongoing trial coverage and details of intriguing unsolved cases. Utah Gov.

Denver police say they believe the vast majority of people participating in the ‘No Kings’ Protest left after the event ended around 4 p.m. FOX31's Alliyah Sims spoke with one demonstrator who said the goal was to peacefully share their message.