Mission Local news service recorded video outside the courthouse on Montgomery Street.
You can see protesters clashing with ICE agents, trying to stop an alleged deportation.
MORE: Trump vowed to deport 'worst of the worst' -- but ICE is also arresting non-criminals: data
Our partners at the San Francisco Standard say people were clinging to an ICE vehicle as it drove away, and that one protester cut her knee falling off the vehicle.
San Francisco Police Department says it wasn't involved in the incident, although protesters say officers were present.