Gavin Newsom in Pasadena when she was alerted to an immigration enforcement operation at MacArthur Park in L.A.'s Westlake District. She directed her driver to turn around and head toward the park, where she demanded that the operation end.

Dozens of federal officers in tactical gear roamed a mostly empty park in a Los Angeles neighborhood with a large immigrant population on Monday for about an hour before clearing out. It wasn’t immediately known if any arrests were made.