In late May and early June 2020, two linked ambush-style attacks against security personnel and law enforcement officers occurred in California, killing two people and injuring three others. Federal authorities said the attacks were carried out to advance the ideology of the boogaloo movement, a loosely organized far-right anti-government movement whose adherents describe preparing for a second American civil war.
The first attack occurred on May 29, 2020, when an assailant fired a rifle from a white van outside the Ronald V. Dellums Federal Building in Oakland, California, striking two Triple Canopy security officers contracted with the Federal Protective Service. One of them, David Patrick Underwood, was killed; the other was seriously injured. The shooting took place near ongoing George Floyd protests but was not connected to them. Surveillance video showed the van had no license plates and had been in the area for over half an hour before the shooting.
On June 6, 2020, Santa Cruz County Sheriff's Department deputies went to a residence in Ben Lomond, California, where they were fired upon with an AR-15-style rifle and attacked with improvised explosive devices. Sheriff Sergeant Damon Gutzwiller was killed, and another deputy was seriously injured. Two responding California Highway Patrol officers were also fired upon, wounding one. The shooter, later identified as Steven Carrillo, was hit during the exchange, fled on foot, and hijacked a vehicle, on which he wrote phrases in his own blood referencing the boogaloo movement, including "boog," "I became unreasonable," and "stop the duopoly." He was later apprehended after being restrained by civilians during an attempted second carjacking.
Carrillo, a 32-year-old U.S. Air Force staff sergeant stationed at Travis Air Force Base, was arrested in connection with the Ben Lomond attack. Evidence recovered from an abandoned van connected to the Oakland shooting, including a ballistic vest bearing boogaloo symbolism, led investigators to Carrillo. The FBI stated that Carrillo and a second man, Robert Alvin Justus Jr., had used the Oakland protests as cover to target law enforcement and had no intention of participating in the demonstrations. Justus surrendered to authorities five days after Carrillo's arrest.
Carrillo was charged with 19 felonies, including murder and attempted murder, with lying-in-wait enhancements. In February 2022, he pleaded guilty to killing Underwood and the attempted murder of the second security officer, and was sentenced to 41 years in prison for the Oakland attack in June 2022. On June 28, 2022, he pleaded guilty to the murder of Gutzwiller and was sentenced on August 26, 2022, to life in prison without parole. Justus was charged with aiding and abetting murder and aiding and abetting attempted murder, pleaded not guilty, and was ultimately convicted and sentenced to life in prison on March 15, 2024.
The case drew public attention after several conservative commentators and public figures, including then-Vice President Mike Pence, made statements linking Underwood's death to the George Floyd protests, which Oakland officials and media watchdog groups characterized as inaccurate.