In Los Angeles, 38 people were arrested downtown on Saturday night, police said Sunday. In Huntington Beach, police arrested a convicted felon they said had a loaded handgun.

In the days before protests erupted in Los Angeles, the Trump administration stepped up its efforts to detain migrants — taking into custody those who arrived for routine check-ins while also conducting workplace raids that have sent waves of fear across Southern California and beyond.

For Vinnie Walsh, 82, of Auburn, Mass., it was “the whole nine yards — the loss of decency, courtesy, compassion, democracy.” Laurae Carpenetti, 54, a physician from the Atlanta suburbs, said that Mr. Trump’s appointment of Robert F. Kennedy Jr. as his top health official was her motivating factor.

Los Angeles Mayor Karen Bass said Sunday that her city doesn’t “need” the military following President Trump’s recent deployment of military troops to Los Angeles amid immigration protests. “We

Arrest made in Los Angeles after a man allegedly attacked CHP officers and set a patrol car on fire during a protest.

In Los Angeles, hundreds of protesters have now gathered by the federal building in downtown, where dozens of service members are standing guard with shields. Choruses of “Shame on you,” “Traitors” and “Marines out of LA” resound from the street.