Police identified a 30-year-old man as the suspect in a fatal shooting during dueling protests Saturday in downtown Denver. Matthew Robert Dolloff remained in jail Sunday without bond on suspicion of first-degree murder in the shooting, jail records show. Dolloff was working as a private security guard for Denver television station 9News when the shooting occurred, the television station has said. Pinkerton, the security company 9News said it contracted with for the protest, did not immediately reply to questions from The Post sent Sunday morning. While Pinkerton had an active license to employ security guards in Denver, officials have no...