US President Donald Trump has ordered active-duty Marines into Los Angeles, vowing those protesting immigration arrests would be “hit harder” than ever.

The extraordinary mobilisation of 700 fulltime professional military personnel, who join hundreds of National Guard troops already there, looked likely to further stoke tensions in a city with a huge Latino population.

California Governor Gavin Newsom slammed the move as “deranged”.

“US Marines have served honourably across multiple wars in defence of democracy,” Newsom posted on X.

“They shouldn’t be deployed on American soil facing their own countrymen to fulfil the deranged fantasy of a dictatorial President. This is un-American.”

The deployment came after demonstrators took over streets in Downtown LA on Monday, torching cars and looting stores in ugly scenes that saw law enforcement responding with tear gas and rubber bullets.

“The people causing the problems are professional agitators and insurrectionists,” Trump told reporters in Washington.

On social media, he said he had deployed National Guard troops “to deal with the violent, instigated riots” and “if we had not done so, Los Angeles would have been completely obliterated”.

He said protesters spat at troops and if they continued to do so, “I promise you they will be hit harder than they have ever been hit before. Such disrespect will not be tolerated!”

LAPD officers on horseback clash with protesters during protests after a series of immigration raids on June 08, 2025 in Los Angeles, California. (Photo by Spencer Platt/Getty Images)

One small business owner whose property was graffitied, supported the strongarm tactics.

“I think it’s needed to stop the vandalism,” she told AFP, declining to give her name.

“Everybody has the right to protest, but do it the right way. Don’t vandalise or hurt your own town because you’re hurting people that are trying to make a living.”

Others were horrified.

“They’re meant to be protecting us, but instead, they’re like, being sent to attack us,” Kelly Diemer, 47, told AFP. “This is not a democracy anymore.”

‘Go home!’

A fourth day of protest was unfolding in Los Angeles after dozens of arrests of what authorities say are illegal migrants and gang members.

“Pigs go home!” demonstrators shouted at National Guardsmen outside a federal detention centre. Others banged on the sides of unmarked vehicles as they passed through police containment lines.

A swelling crowd was converging on the centre, where Los Angeles Police Department officers were forming containment lines seemingly aimed at separating demonstrators from federal agents.

Trump’s border tsar Tom Homan said Immigration and Customs Enforcement (ICE) was targeting members of cartels in Mexico and Colombia.

Many locals painted a different picture.

A demonstrator rides a bicycle past burning Waymo vehicles as protesters clash with law enforcement near the federal building during a protest in response to federal immigration operations in Los Angeles, California, on June 8, 2025. US President Donald Trump deployed 2,000 troops on June 7 to handle escalating protests against immigration enforcement raids in the Los Angeles area, a move the state's governor termed "purposefully inflammatory." Federal agents clashed with angry crowds in a Los Angeles suburb as protests stretched into a second night Saturday, shooting flash-bang grenades and shutting part of a freeway amid raids on undocumented migrants, reports said. (Photo by ETIENNE LAURENT / AFP)

They are “people who are here earnestly trying to improve their lives [and] deserve a chance and don’t deserve to be treated as criminals”, Deborah McCurdy, 64, told AFP at a rally.

Overnight, vandals had set fires and smashed windows, adding to the scenes of damage left after five Waymo self-driving cars were torched. Obscene graffiti was daubed over many surfaces.

Despite isolated and eye-catching acts of violence, officials and local law enforcement stressed that the majority of protesters had been peaceful.

Schools across Los Angeles were operating normally on Tuesday, while the rhythms of life in the sprawling city appeared largely unchanged.

Mayor Karen Bass told CNN that in contrast to Trump’s rhetoric, “this is isolated to a few streets. This is not citywide civil unrest”.

At least 56 people were arrested over two days and five officers suffered minor injuries, Los Angeles Police Department officials said, while about 60 people were arrested in protests in San Francisco.

The National Guard is frequently used in natural disasters, and occasionally in civil unrest, but almost always with the consent of local authorities.

Trump’s deployment of the force – the first over the head of a state governor since 1965 at the height of the civil rights movement – was criticised by Democrats, including Kamala Harris.

The former Vice-President and Trump’s opponent in the 2024 election called it “a dangerous escalation meant to provoke chaos”.

The United Nations warned against “further militarisation” of the situation, in remarks likely to anger the White House.

-Agence France-Presse