James J. O'Brien
Agency patch
Patrolman

James J. O'Brien

Chicago Police Department — Chicago, IL
Felonious Veteran
End of Watch September 16, 1928
Age 45
Tour of Duty 6 yrs
Badge 1544
The Vigil Panel 56 ›
Gender Male

Incident

Patrolman James J. O'Brien was shot to death and his partner was critically wounded at 1:45 A.M. at the southwest corner of 63rd and Halsted Streets by an 25-year-old auto thief who was also wounded by O'Brien's partner. The officers came upon him as he was tampering with a car door lock. Although wounded, he escaped in a stolen car but was captured the same day in a doctor's office in Oak Lawn where he went for medical aid. On September 17th, 1928, he was held by the coroner to the grand jury, which indicted him for murder. The suspect, age 27, was convicted of Patrolman O'Brien's murder and sentenced to 30 years in prison on January 25th, 1929. He applied for clemency on April 8, 1939. He was released at some point between 1941 and 1943. The exact date is unknown. Patrolman O'Brien had served with the Chicago Police Department for six years and was assigned to the 15th District. He was survived by his wife and five sons. He was a World War I veteran.

Survivors

He was survived by his wife and five sons.

In Our Keeping

Permanent identifier
BO-US-IL-01C219BC
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 served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Patrolman O'Brien gave the Chicago Police Department 6 years.
Thank you for your service to the Chicago community, and for your service before it. Gone but never to be forgotten.
Rest easy, brother.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Location Chicago, IL
Platform Identity cpd.cook.il.us.gov.nw

Service Record

End of Watch September 16, 1928
Tour of Duty 6 yrs
Age 45
Badge Number 1544
Gender Male

Incident Details

Cause Felonious
Weapon Handgun; Revolver
Offender Released between 1941 and 1943

Military Service

James J. O'Brien served in the United States military before joining law enforcement. Full service record available on salute.nw.

Patrolman James J. O'Brien 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 Police Department, 396 of 571 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 69.4% of this agency's fallen.

Chicago Police Department
396
of 571 officers
69.4% Felonious
IL — Statewide
842
of 1,318 officers
63.9% Felonious
Nationwide
17,623
of 32,508 officers
54.2% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. James J. O'Brien's cause is highlighted.

Felonious
17,623 (54.2%)
Accident
10,088 (31%)
Illness
2,974 (9.1%)
Cardiac
1,306 (4%)
Undetermined
260 (0.8%)
Suicide
256 (0.8%)
vehicular
1 (0%)

How James J. O'Brien Compares

Age at End of Watch
45
This officer
Avg for Felonious: 39.0 years
Years of Service
6
This officer
Avg for Felonious: 8.5 years

Offender Outcome

Released between 1941 and 1943

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. James J. O'Brien is highlighted in Sep.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,517
May
1,505
Jun
1,443
Jul
1,587
Aug
1,516
Sep
1,553
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. James J. O'Brien was killed by handgun; revolver.

Gun; Unknown type
5,083
Handgun
2,077
Shotgun
922
Officer's handgun
909
Automobile; Alcohol involved
530
Rifle
518

Incident Location