Louis Carrasquillo, a 31-year-old Hispanic man, was killed in Chicago on August 12, 2016. He was found with multiple gunshot wounds in a neighborhood noted for high crime, and his death prompted an extensive investigation by the Chicago Police Department.

Several people were initially questioned and the case remained unsolved for a time. Later, a suspect was arrested and charged with first-degree murder; the prosecution relied on witness testimony and forensic evidence while the defense contested that evidence. The court ultimately returned a guilty verdict in the case.

Who in the community knew Louis or witnessed events around August 12, 2016, and can help fill gaps in the timeline?