Roll of Honor
Incident
Policeman Mario Deiro was shot and killed by a man he was trying to arrest for public drunkenness. The 40-year-old suspect was convicted of manslaughter, sentenced to prison, and paroled on October 17, 1947.
Survivors
Policeman Deiro was survived by his wife and three children.
In Our Keeping
- Permanent identifier
BO-US-CA-F2C8A37D- Stewardship
- Maintained by NeuraWeb Global Inc.
- 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.
Policeman Deiro served with the Los Angeles Police Department.
Thank you for your service to the Los Angeles community. Gone but never to be forgotten.
Rest easy, Policeman Deiro.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Policeman Mario V. Deiro 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 CA, 974 of 1,837 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 53% of this state's fallen. That is 1.2 percentage points below the national rate of 54.2%.
At Los Angeles Police Department, 115 of 240 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 47.9% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Mario V. Deiro's cause is highlighted.
How Mario V. Deiro Compares
Offender Outcome
Paroled in 1947
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Mario V. Deiro is highlighted in Dec.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Mario V. Deiro was killed by gun; unknown type.
Incident Location
Others Who Wore This Badge
239 officers from Los Angeles Police Department are honored on badge.nw. Showing the 16 most recent.
