Surprise U.S. Immigration and Customs Enforcement sweeps in Downtown Los Angeles prompted fierce pushback from elected officials and protesters, who decried the action as "cruel and unnecessary."

After a day of contention and little information about the nature of an immigration enforcement operation in Los Angeles, the Department of Homeland Security has finally released details about the joint operation conducted Friday morning.

"As Mayor of a proud city of immigrants, who contribute to our city in so many ways, I am deeply angered by what has taken place," Bass said. "These tactics sow terror in our communities and disrupt basic principles of safety in our city. My office is in close coordination with immigrant rights community organizations. We will not stand for this."