Marvin C. Manuel, 38, was killed in Chicago, Illinois, on December 3, 2009. His death is recorded among the many homicides the city experienced between 2009 and 2012 during a period of elevated violence.

Authorities and community activists were working to reduce violence in 2009, and law enforcement used data-driven mapping to identify high-crime areas, but those efforts faced significant obstacles.

Manuel’s death was one of many that year that underscored the need for comprehensive intervention and community support. If anyone has information about Marvin Manuel or remembers the circumstances around December 3, 2009, please share what is known.