DENVER—A police officer who was one of three people killed in a shooting at a suburban Denver shopping district was ambushed by a suspect who expressed hatred toward police, authorities said Tuesday. Arvada Police Officer Gordon Beesley “was targeted because he was wearing an Arvada police uniform and a badge,” police Chief Link Strate said at a news conference. “Officer Beasley was ambushed by someone who expressed hatred of police officers.” Strate called it a “deliberate act of violence” and an ”isolated incident.” But he did not provide details about the suspect, who also died in the shootout Monday; how authorities knew that the suspect had deliberately attacked Beesley; and how they knew about the suspect’s views toward police. The suspect was identified as 59-year-old Ronald Troyke by Jefferson County coroner Annette Cannon. Strate also did not explain what started Monday’s shootout, which also killed a man authorities have described …