Multiple people were detained by U.S. Immigration and Customs Enforcement agents in downtown San Francisco on Tuesday morning, merely 12 hours after thousands of protesters took to the streets in the Mission to rally against the widespread raids taking place across California.

Dozens of anti-ICE demonstrators have gathered outside a San Francisco immigration court. The demonstration was organized over social media after local organizers received reports that at least 10 people had been arrested by Immigration and Customs Enforcement agents as they attended court hearings.

Protesters outside the San Francisco ICE headquarters were in a long standoff with dozens of riot police. Officers then rushed the crowd.