Newhall massacre
1970 CE.
Shown on the map at 34.423°, -118.585°.
The Newhall incident, also called the Newhall massacre, was a deadly shootout on April 5–6, 1970, in Valencia, California, United States, between two heavily armed criminals and four officers of the California Highway Patrol (CHP). In less than 30 minutes, four CHP officers and one of the suspects were killed and another man was pistol-whipped in what was at the time the deadliest day in the history of California law enforcement. At about 11:54 p.m. on April 5, CHP officers Walt Frago and Roger Gore conducted a traffic stop of Bobby Davis and Jack Twinning in conjunction with an incident reported to the CHP minutes earlier. Davis and Twinning initially cooperated with the officers but then opened fire, killing both of them. Moments later, officers George Alleyn and James Pence arrived on the scene and engaged the perpetrators in a shootout. A bystander tried to help by firing an officer's weapon, but the three were outgunned. Both Alleyn and Pence suffered fatal injuries, while the witness ran out of ammunition and took cover in a ditch.
Text from the Wikipedia article Newhall incident, licensed CC BY-SA 4.0.