William Willie Everett Cooper, 58, was shot and killed on July 15, 2017, near the Lilydale Outreach Workers for a Better Community office on the Far South Side of Chicago. He was struck in the mouth and back by fire from a dark-colored vehicle; investigators reported an AR-15 assault rifle was used and numerous shell casings were left at the scene in the 100-block of West 95th Street. Family members, friends and community members were at the scene and Cooper was pronounced dead there.

Cooper was the principal officer of a nonprofit that helped place teens in jobs on the South Side and was described by those who knew him as a community leader who supported education, housing and funeral expenses for others. The Chicago Police Department had no immediate suspects in the days after the shooting and continued to seek leads, including any surveillance footage that might show the attack.

Anyone with information about Cooper, the dark-colored vehicle, or surveillance from the area on July 15, 2017, is asked to come forward.