Marcelino Rivera, 26, was fatally shot on May 31, 2009, while on a sidewalk in the Chicago Lawn neighborhood. The shooting happened late at night in an area described as having a long history of gun violence. No suspects have been publicly identified and the case remains unresolved.

Community leaders have continued to press for more resources and interventions, but many similar cases have stayed unsolved, contributing to ongoing concerns about safety.

Does anyone who knew Marcelino or who was in Chicago Lawn that night have information to share with investigators?