Incident Summary:

06/11/1974: A suspected Chicano Liberation Front sniper fired shots into the parish hall window of the Holy Rosary Church in the Decoto district of Union City, California in the United States. Chief of Police, William Cann, was fatally shot twice in the neck, while speaking to a group in efforts to ease tensions and discuss grievances in the Latin-American community as well as better police relations in the Mexican-American district of the suburb. Four others were also wounded. No one was arrested and no weapon was found in this incident.



United States

North America

region/u.s. state:


Union City

Location Details:
Holy Rosary Church in the Decoto district

Attack Information
Type of Attack (more) Armed Assault
Successful Attack? (more) Yes
Target Information (more)
Target Type: Police
Name of Entity California Police
Specific Description San Francisco Police Chief William Cann, who was giving a talk in attempts to better Latin-American and police relations in the community.
Nationality of Target United States
Target Type: Private Citizens & Property
Name of Entity Civilians at a meeting at the Holy Rosary Church where Latino-American relations were being discussed
Specific Description Civilians at a meeting at the Holy Rosary Church where Latino-American relations were being discussed
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage Unknown
Extent of Property Damage Unknown
Value of Property Damage Unknown
Weapon Information
Type Sub-type
Firearms Rifle/Shotgun (non-automatic)
Weapon Details
Additional Information
Suicide Attack?No
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Perpetrator Group Information
Group Name Claimed Responsibility
Chicano Liberation Front (suspected) No
Perpetrator Statistics
Number of Perpetrators 1
Number of Captured Perpetrators Unknown
Casualty Information
Total Number of Casualties 1 Fatalities / 4 Injured
Total Number of Fatalities 1
Number of U.S. Fatalities 1
Number of Perpetrator Fatalities 0
Total Number of Injured 4
Number of U.S. Injured 4
Number of Perpetrators Injured 4
"Police Chief and 4 Wounded By Sniper in California City," New York Times, June 13, 1974.
Marcia McKnight Trick, "Chronology of Incidents of Terroristic, Quasi-Terroristic, and Political Violence in the United States: January 1965 to March 1976," National Advisory Committee on Criminal Justice Standards and Goals: Report of the Task Force on Disorders and Terrorism, 1976.
Christopher Hewitt, "Political Violence and Terrorism in Modern America: A Chronology," Praeger Security International, 2005.