Leonard R. Lesnieski was a 48-year-old veteran Milwaukee police officer killed in the line of duty on March 19, 1985. Lesnieski had joined the Milwaukee Police Department on March 24, 1969, after four years in the United States Marine Corps, and had about 16 years of service. He lived with his wife, Carol, and their two daughters.

On the morning of March 19, Lesnieski and Officer Rosario J. Collura stopped to investigate a group near a grocery store at North 17th Street and West Center Street. During a search, Terrance B. Davis produced a handgun, shot Lesnieski in the chest (a wound that struck his heart) and shot Collura, who later died from uncontrollable bleeding. Davis fled but was arrested after an apparently separate attempted armed robbery in the suburb of Brown Deer.

Davis was convicted in 1985 of two counts of first-degree murder while using a dangerous weapon and related offenses, and received consecutive life sentences with additional terms. Subsequent appeals and post-conviction challenges were rejected, and Davis remained incarcerated.