Officers opened fire Thursday night at a vehicle backing into a line of Coast Guard and law enforcement personnel outside the U.S. Coast Guard base in Alameda, site of a day-long protest against what was originally planned as an immigration enforcement surge in the San Francisco Bay Area.

A CBS News Bay Area photographer at the scene captured video showing a U-Haul truck reversing toward the base entrance and law enforcement firing their weapons at the vehicle.

Photographer Rick Villaroman said the U-Haul had been parked outside the base for the better part of the day until it inexplicably began to reverse quickly toward officers blocking off the gate.

"He just hit the gas and sped towards them," Villaroman said. "And that's when they opened fire. About 20 to 30 rounds."

In a stat

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