Salt Lake City police are investigating the roles of two self-described "peacekeepers" following a fatal shooting at Saturday's protest that left one person dead and another injured, raising questions about unauthorized security at public demonstrations.

People protest Trump administration policies in front of the Arizona Capitol during the "No Kings" rally, part of a nationwide series of demonstrations on June 14, 2025, in Phoenix.

Protesters voiced concerns over a range of issues, including Trump's deployment of troops to Los Angeles and cuts to government services.

An innocent bystander at a “No Kings” protest in Utah was shot and killed by a “peacekeeper” who was aiming for a different man pointing an AR-15-style rifle toward the crowd, witnesses told Salt Lake City police.

The 39-year-old man shot and killed at a weekend “No Kings” protest in Salt Lake City was a successful fashion designer and former “Project Runway” contestant who devoted his life to celebrating arti...

Arturo Gamboa, 24, was also arrested and booked into the Salt Lake County Metro Jail on a murder charge.