Video indicates slain protester was upset about being filmed

This photo provided by the Denver Police Department shows Matthew Dolloff. Police identified on Sunday, Oct. 11, 2020, a 30-year-old man as the suspect in a fatal shooting that took place in downtown Denver during dueling protests. Matthew Dolloff, a private security guard working for local television station KUSA TV, was being held for investigation of first degree murder in connection with Saturday afternoon's shooting, Denver police said in a social media post.