Judge scrutinizes probable cause in San Francisco mass juvenile arrests

A federal judge is pressing a central question in the Dolores Park hill bomb case: did San Francisco police have individualized probable cause for each minor they arrested, or did they treat the crowd as justification enough? The answer could shape how the city handles youth gatherings, skate events, and future mass arrests in the Mission District.

The arrests came during the July 8, 2023 hill bomb, an informal annual downhill skateboarding event that has drawn hundreds of skaters and spectators to Dolores Street every summer for the past decade. San Francisco police said they arrested 117 people, including 83 juveniles and 34 adults, after declaring the gathering an unlawful assembly. Plaintiffs later said 81 of those taken into custody were children ages 12 to 17.

Police deployed more than 100 officers, along with four buses for juveniles and four vans for adults. The last child was not released from Mission Station until 4:15 a.m. the next morning. Young people who were let go that night were issued misdemeanor notices to appear for inciting a riot, conspiracy, and failure to disperse. Parents said many of the children were simply passing through and were rounded up without officers checking whether each person had actually taken part in the hill bomb.

The city’s hard line on the event did not come out of nowhere. The hill bomb has been tied to injuries and violence before, including a 2017 incident in which a police sergeant knocked a skater off his board, a severe head injury to a skateboarding icon that same year, a 2019 skateboarder coma, a 2020 death in a collision involving a 23-year-old cyclist, and a 2022 stabbing after a fight. Those episodes helped turn the gathering into a recurring public safety battle for San Francisco officials.

Even after the 2023 crackdown, the warning signs remained. In 2024, city officials told would-be participants to stay away or face arrest again, and Supervisor Rafael Mandelman urged people not to attend. Skateboarding advocates argued the city should have worked toward a sanctioned event with permits, insurance, medics, and police overtime rather than a sweeping enforcement response.

The litigation has now moved well beyond the arrests themselves. A federal judge allowed most civil-rights claims to proceed, and in October 2025 granted class certification so the 113 adults and children arrested could sue together. Attorneys for the plaintiffs said police kettled young people between police lines and arrested them without a reasonable basis. Mission Local reported that the city’s former police chief called the 2023 operation the largest mass arrest of teenagers during his tenure.

The city faces potential liability in any settlement or judgment, and because the officers were on duty as city employees, any payout would come from the City and County of San Francisco’s general fund.