Hello and welcome to NewsHour from the World Service of the BBC.

Coming live from London, this is Owen Bennett Jones.

President Donald Trump's decision to deploy National Guard troops and Marines to California

to confront opponents of immigration raids has opened up yet another political front in the United States.

A U-Gov poll has found that 47% disapprove of the Marines being deployed, 45% disapprove of the

protests. So once again, the US split down the middle. The protests against President Trump's immigration policies started in California

have now spread to various other cities, including New York.

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Well, police in Los Angeles say they've carried out mass arrests following the introduction of a partial curfew in districts of downtown Los Angeles.

And we've also got the first federal charges, which have cited evidence about Molotov cocktails being among the weapons seized.

The U.S. attorney for the Central District of California, Bill S.A. Lee, said the defendants in that case could face up to 10 years in prison.

The last few days we have seen vicious attacks on our agents and our properties here in the federal government.

The escalation of violence by these rioters poses a serious threat to our agents and the safety of the public.

Throwing rocks, explosives,

assaulting agents and committing other acts of violence are extremely dangerous and will not be tolerated. Well, President Trump has said those protesting immigration arrests would be hit harder

than ever and that we're going to have troops everywhere.

In Los Angeles, just to give you the numbers, there are 4,000 in the National Guard,

700 Marines, and they are currently being trained in crowd control techniques outside the city,

and will be sent into the city soon, according to the officer leading that deployment,

Major General Scott Sherman, who clarified

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