Clarence Lamont Thomas, 33, was shot dead in downtown Denver in the early morning hours of February 25, 2017. He was a father of two young sons and was engaged to Victoria Johnson, the mother of one son. Loved ones described him as hardworking, compassionate and someone who put others first; his father, Arthur Williams, said Thomas intervened because he was trying to do the right thing.

Denver police later identified and charged 18-year-old Devante Crawford with murder and intimidating a witness in connection with the killing; those charges were announced in June 2017, on what would have been Thomas’s 34th birthday. Did anyone in downtown Denver that night see Thomas try to break up the fight or notice anything suspicious near 15th and Market Streets?