Dozens of U.S. Border Patrol agents showed up Thursday morning in downtown Los Angeles, where Gov. Gavin Newsom and other California political leaders were speaking at an event, and detained at least one person in the latest high-profile immigration enforcement operation in the city.

A group of masked U.S. Border Patrol agents showed up in trucks outside of the press conference at the Japanese American National Museum.

U.S. border patrol agents made more arrests in Los Angeles and the surrounding area, arresting a woman selling food outside a Home Depot in Los Angeles and workers at a car wash in Montebello.

California Gov. Gavin Newsom often holds news conferences accompanied by state troopers, the California Highway Patrol. So it was unusual on Thursday, when Newsom was greeted by the Trump administration’s border patrol agents.

Border Patrol agents arrested at least one person, who a coworker said was delivering strawberries, outside of Gov. Gavin Newsom's event in Little Tokyo.

Border Patrol was “directed, clearly by the White House, as a political operation to make a point,” Newsom said.

Immigration authorities show up outside a rally featuring Gov. Gavin Newsom and allies who want to redraw California’s congressional map.

A group of masked U.S. Border Patrol agents showed up in trucks outside of the press conference at the Japanese American National Museum.

U.S. border patrol agents made more arrests in Los Angeles and the surrounding area, arresting a woman selling food outside a Home Depot in Los Angeles and workers at a car wash in Montebello, California.

According to eyewitness accounts, a man driving a Penske truck approached day laborers and said he was looking for workers, before more than half a dozen Border Patrol agents jumped from the truck's c