Spencer Thornton, Jr.
Incident
Park Police Officer Spencer Thornton was shot and killed while intervening in a quarrel at the 31st Street Beach. One of the men involved in the disturbance opened fire, killing Officer Thornton and the other participant in the quarrel. Two other police officers who had been assigned to the Democratic picnic shot the suspect in the shoulder. Officer Thornton died of his wounds at Michael Reese Hospital. The subject who shot him was convicted of two counts of murder and sentenced to two life terms to be served consecutively. He died in prison in 1970.
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BO-US-IL-FDE495DF- Stewardship
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- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Park Police Officer Thornton served with the Chicago Park District Police Department.
Thank you for your service to the Chicago community. Gone but never to be forgotten.
Rest easy, Park Police Officer Thornton.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Park Police Officer Spencer Thornton, Jr. is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.
In IL, 842 of 1,318 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 63.9% of this state's fallen. That is 9.7 percentage points above the national rate of 54.2%.
At Chicago Park District Police Department, 8 of 13 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 61.5% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Spencer Thornton, Jr.'s cause is highlighted.
How Spencer Thornton, Jr. Compares
Offender Outcome
Died in prison
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Spencer Thornton, Jr. is highlighted in Sep.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Spencer Thornton, Jr. was killed by handgun; revolver.
Incident Location
Others Who Wore This Badge
12 officers from Chicago Park District Police Department are honored on badge.nw.











