Sherman serves as the commander of Joint Task Force 51, the command headquarters for the 4,000 federalized National Guardsmen and 700 Marines assigned to protect federal personnel

By Omar Younis, Brad Brooks, Phil Stewart and Idrees AliLOS ANGELES (Reuters) -U.S. Marines deployed to Los Angeles made their first detention of a civilian on Friday, part of a rare use of military force to support domestic police and coming ahead of national protests over President Donald Trump's military parade in Washington.

After a week of protests over federal immigration raids, about 200 Marines have moved into Los Angeles to guard a federal building and personnel in the city.

"No one signs up to join the United States Marine Corps to attack protesters," U.S. Rep. Seth Moulton, D-6th District, a former Marine, told MSNBC on Sunday.

After a day of peaceful protests in Los Angeles, tensions mounted between protesters and Marines outside the federal building in downtown LA.

All traffic has been halted on a portion of the 101 freeway in Los Angeles as protesters walk on the freeway, according to Los Angeles Police Department. Both northbound and southbound lanes have been impacted, officials said. "101 freeway between Alameda and the 110 freeway is closed due to demonstrators walking onto the freeway," police said.

More than 700 Marines based out of the Marine Corps Air Ground Combat Center in California have been mobilized to respond to the protests in Los Angeles, and the troops will join the thousands of National Guard members who were activated by President Donald Trump over the weekend without the consent of California’s governor or LA’s mayor.

President Donald Trump has sent the Marines to Los Angeles in an effort to quash anti-ICE protests that have ravaged parts of the city on Tuesday. Images from L.A. show masked protesters blocking roads,