Michael J. Griffin, 40, was shot and killed in Chicago, Illinois, on July 4, 2016. His death occurred during a year that saw a notable spike in gun-related homicides across the city, and the Fourth of July holiday weekend was among the deadliest periods that summer. Griffin’s killing is described as part of a broader wave of gun violence that affected Chicago neighborhoods in 2016, amid rising crime rates and persistent community challenges.

Those who knew Michael Griffin or who have information about shootings in Chicago on that holiday weekend are asked to come forward.