IDAHO FALLS — A 21-year-old has been convicted of second-degree murder after a four day trial, where prosecutors argued that he killed a stranger because he was “mad and wanted to fight.”A jury in Bonneville County found Robert Wyatt Lange guilty of second-degree murder in the death of 50-year-old Alejandro Parades Hurtado. Obituary | Alejandro Paredes Hurtado, Wood Funeral HomeAlejandro Parades Hurtado | Courtesy photoThe murder occurred on the Northgate Mile in Idaho Falls on Oct. 19. RELATED | Man who turned himself in for murder allegedly told police he ‘wanted to fight’The man, later identified as Paredes-Hurtado, died from his injuries several days later, after being taken to Eastern Idaho Regional Medical Center for treatment. On Oct. 21, the Idaho Falls Police Department released dashcam video from the night of the assault. He’s accused of beating man on Northgate MileLange turned himself into the Idaho Falls Police Department on Oct. 22.