Jemel OBrien was 29 when he was killed in Chicago on July 18, 2015. Witnesses gave differing stories, which complicated the investigation, but police developed a timeline and identified several suspects.

Several people were arrested in connection with the case and charged with offenses ranging from unlawful possession of firearms to first-degree murder. Jemel’s family participated in court hearings and public demonstrations calling for accountability, and civil rights groups became involved as the case drew public attention.

What can anyone who was in that area on July 18, 2015, or who knew Jemel, add about the events that night?