James Vincent Madrid, 34, was shot to death in the early hours of August 2, 2021, on the 1400 block of West Division Street in Chicago.

Investigators say the encounter began when Madrid, walking alone, intervened in an argument involving a woman and several others. Surveillance footage and a witness’s phone video, later enhanced by a federal forensics laboratory, show the woman striking Madrid with her purse, knocking him down, then calling her husband to come to the scene. Video and witness accounts portray the husband, identified as 30-year-old Tommie Brown, arriving, chasing Madrid, and opening fire. Eleven shell casings at the scene were all fired from the same gun. Brown was arrested and charged with first-degree murder and held without bail.

The prosecution has relied heavily on the video and forensic evidence; the defense has disputed the interpretation of events. Does anyone have further information about Madrid’s last movements that morning or about witnesses who saw what happened?