RAW: Video shows fatal shooting at protest in downtown Denver

A private security guard is being held as a suspect in a deadly shooting near the Denver Art Museum, according to the Denver Police Department (DPD). Matthew Dolloff, 30, is being held at the Denver Downtown Detention Center on suspicion of first degree murder. He has not been formally charged. Dolloff was contracted through Pinkerton by 9NEWS. More local videos here: Subscribe to NEXT: Stay connected: 9NEWS Website: Facebook: https://www