Motorcycle Officer John Mercer Black

Motorcycle Officer John Mercer Black

Los Angeles County Sheriff's Department, California

End of Watch Friday, November 22, 1929

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John Mercer Black

Motorcycle Officer John Black succumbed to injuries received when his motorcycle was struck by a truck traveling at a high rate of speed on Aliso Street near Vignes Street.

He was transported to Georgia Street Receiving Hospital where he succumbed to his injuries.

The truck driver was charged with manslaughter but acquitted at trial.

Officer Black had served with the Los Angeles County Sheriff's Department for one year. He was survived by his family.


  • Age 26
  • Tour 1 year
  • Badge Not available

Incident Details

  • Cause Motorcycle crash

routine driving

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“Blessed are the peacemakers: for they shall be called the children of God."
Matthew 5:9

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Federal Air Marshal Service (Retired)

March 17, 2023

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