What to Know About the Attack at the Jewish Rally in Boulder, Colorado

Police say the perpetrator set eight people ablaze with a ’makeshift flamethrower' and an incendiary device.

An FBI team investigates an attack on demonstrators calling for the release of Israeli hostages held in Gaza, at the scene on Pearl Street in Boulder, Colo., on June 1, 2025. Eli Imadali/AFP via Getty Images

The latest in a string of anti-Semitic attacks hit Boulder, Colorado, on June 1, just before the Jewish holiday of Shavuot.

Police say witnesses told investigators that the attacker yelled, “Free Palestine.”