Michael K. Redmond, 31, of Chicago, was killed on May 17, 2011; his death is recorded as a homicide.

The killing occurred during a year that saw over 400 homicides in the city, a surge tied in the records to concentrated violence in neighborhoods affected by gang activity and economic hardship. Those records also remark on investigative obstacles such as limited witness cooperation and systemic barriers that made many 2011 cases difficult to solve.

Did anyone in Chicago who knew Michael or who was in his neighborhood on May 17, 2011, see or hear anything that could help clarify what happened?