About 50 U.S. Marines squared off against hundreds of protesters in front of a federal building in downtown Los Angeles on Saturday, with the crowd yelling in unison for them to go home.

Local police deployed pepper spray and non-lethal munitions late Saturday afternoon in Los Angeles as the "No Kings" protest there began to devolve into a more confrontational event.

More than 100 people were arrested on Monday night in Los Angeles, as "fringe groups" continued late-night protests, City of Los Angeles Mayor Karen Bass said.

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.

The LAPD and other agencies are aggressively clearing the streets of downtown LA, where protestors had pushed up against police lines.