LOS ANGELES (AP) — Marines and additional National Guard troops headed to Los Angeles on Tuesday, sent in by President Donald Trump in response to protests over immigration raids despite the objections of the governor and local leaders.

The authorization came amid mostly peaceful protests in country's second-largest city on Monday.

California officials sued Trump on Monday in an attempt to roll back his National Guard deployment, saying the president trampled on the state’s sovereignty. Local officials and Democratic Gov. Gavin Newsom don’t want the military deployed in the city, and the police chief said it creates logistical challenges for safely handling protests.

The 2,000 Guard members authorized Monday were in addition to the 2,100 the president mobilized for the protests Sunday. Trump has also deployed 700 Marines to help them, which the Pentagon said Tuesday will cost taxpayers $134 million.

Trump said in a social media post that the city would have been “completely obliterated” if he hadn't sent Guard members.

This appears to be the first time in decades that a state’s National Guard was activated without a request from its governor.

Here are some things to know about the lawsuit, the protests and the troop deployments:

What’s the mood in Los Angeles?

The city's downtown was fairly quiet Tuesday morning, with Guard members outnumbering protesters. Several Guard members were stationed in front of the Metropolitan Detention Center, a federal lockup where some immigrants are being held, with long guns and wooden bats slung over their shoulders. Passing drivers occasionally honked at or heckled them, drawing no response. News crews were stationed across the street, awaiting the possible arrival of the Marines, who had arrived in the area by late morning.

Otherwise, there were few signs of the tumult that gripped the city in recent nights, aside from the graffiti scrawled across several buildings — “Abolish ICE,” “Amerikkka,” and obscene slogans directed at Trump and federal law enforcement.

Mayor Karen Bass on Tuesday pinned the unrest squarely on the Trump administration, saying there was “nothing going on here that warranted the federal intervention.”

She also said she was mystified about why the Marines were called in.

“People have asked me what are the Marines going to do when they get here? That’s a good question. I have no idea,” she said at a news conference, emphasizing that violence and looting by protesters won't be tolerated and that the city was considering imposing a curfew.

Monday’s demonstrations were less raucous than Sunday’s, with thousands peacefully attending a rally at City Hall to protest Friday's arrest of union leader David Huerta, who was protesting the immigration raids, and hundreds rallying outside of the Metropolitan Detention Center. The protests have been driven by anger over Trump’s stepped-up enforcement of immigration laws that critics say are tearing apart migrant families.

Newsom vs. Trump

Trump and his border czar, Tom Holman, traded taunts with Newsom about the possibility of arresting the governor if he interfered with federal immigration enforcement efforts.

“I would do it if I were Tom. I think it’s great,” Trump said.

Newsom responded in a post on X: “The President of the United States just called for the arrest of a sitting Governor. This is a day I hoped I would never see in America.”

Newsom has called the presence of troops on the streets of Los Angeles both “illegal and immoral.”

“This isn’t about public safety. It’s about stroking a dangerous President’s ego,” Newsom said on social media.

In a post Monday, Newsom called the deployment of Marines “a blatant abuse of power” and said officials would sue to stop it.

“U.S. Marines serve a valuable purpose for this country — defending democracy. They are not political pawns,” Newsom wrote. “The Courts and Congress must act. Checks and balances are crumbling.”

What’s behind the demonstrations?

The protests were sparked by Trump’s immigration crackdown in the area. They started Friday in downtown Los Angeles before spreading on Saturday to Paramount and neighboring Compton.

Federal agents arrested immigrants in LA’s fashion district, in a Home Depot parking lot and at several other locations on Friday. The next day, they were staging at a Department of Homeland Security office near another Home Depot in Paramount, which drew out protesters who suspected another raid. Federal authorities later said there was no enforcement activity at that Home Depot.

Demonstrators attempted to block Border Patrol vehicles by hurling rocks and chunks of cement. In response, agents in riot gear unleashed tear gas, flash-bang explosives and pepper balls.

The weeklong tally of immigrant arrests in the LA area climbed above 100, federal authorities said. Many have also been arrested while protesting.

What's happening elsewhere?

Protest over immigration raids have happening in major cities throughout the country, including on Tuesday, though none have reached the scale of those in Los Angeles.

Hundreds of protesters organized by the Austin, Texas, chapter of the Party for Socialism and Liberation gathered near the state Capitol before moving toward the federal building that houses an Immigration and Customs Enforcement office.

Authorities appeared to use chemical irritants to disperse a crowd, and the city's police chief said Tuesday that four officers were injured during Monday's protests, including three who were struck by thrown rocks.

Texas' Republican governor, Greg Abbott, said authorities arrested more than a dozen protesters.

“Peaceful protesting is legal,” Abbott posted on X. “But once you cross the line, you will be arrested.”

In Dallas, hundreds of people demonstrated on a city bridge for hours before police determined the rally to be “unlawful.” Police said one person was arrested and that charges were pending.

Touting Florida’s efforts to lead the country in cooperating with federal immigration enforcement, Republican Gov. Ron DeSantis said law enforcement in his state is ready to crack down if demonstrations there boil over into riots, warning that “commandeering roadways” isn't a form of “peaceful protest” in his eyes.

“The minute you cross into attacking law enforcement, any type of rioting, any type of vandalism, looting, just be prepared to have the law come down on you,” DeSantis added. “And we will make an example of you, you can guarantee it.”

The demonstrations from Boston to Seattle have ranged from gatherings outside of federal office buildings or statehouses, and marches through downtown neighborhoods. “No Kings” rallies critical of Trump are planned nationwide Saturday to coincide with the president's scheduled military parade in Washington, D.C.

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Associated Press reporters Michael Casey in Boston, Jesse Bedayn in Denver, Jason Dearen in Los Angeles, Rio Yamat in Las Vegas, Maryclaire Dale in Philadelphia, Amy Taxin in Santa Ana, California, Martha Bellisle in Seattle, Kate Payne in Tallahassee, Florida, and Lolita C. Baldor in Washington contributed to this report.