Protests have flared in the US over the death of a Black man. A white police officer has been charged with his murder. (BBC)
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Curfews have been ordered in cities across the Unted States to try to stem unrest sparked by the death of a black man in police custody.
But they have been defied in many areas, with shops looted, cars burned and buildings attacked. Riot police have used tear gas and rubber bullets.
President Donald Trump urged "healing" over the death of George Floyd but said he could not allow mobs to dominate.
A white ex-policeman is charged with murdering Floyd, 46, in Minneapolis.
Derek Chauvin, 44, is due to appear in court on Monday.
In video footage, Chauvin can be seen kneeling on Floyd's neck for several minutes on Monday. Mr Floyd repeatedly says that he is unable to breathe.
Three other officers present at the time have also since been sacked.
The Floyd case has reignited US anger over police killings of black Americans. It follows the high-profile cases of Michael Brown in Ferguson, Eric Garner in New York and others that have driven the Black Lives Matter movement.
But for many it also reflects years of frustration over socioeconomic inequality and segregation, not least in Minneapolis itself.
A big anti-racism protest also took place in London, on Sunday, first in Trafalgar Square, then the crowd moved on to the US embassy.
What's the latest on the protests?
Huge demonstrations have taken place in at least 30 cities across the US. They were largely peaceful on Saturday, but violence flared later in the day.
One of the cities worst affected by unrest is Los Angeles.
California Governor Gavin Newsom declared a state of emergency in the city and activated the National Guard - the reserve military force that can be called on to intervene in domestic emergencies.
The entire city is under a 10 p.m. to 5:30 a.m.curfew. Numerous shops have been looted, including on the famous retail avenues, Melrose and Fairfax, while overhead footage showed fires burning. Earlier police fired rubber bullets and hit protesters with batons. Hundreds of arrests have been made.
Mayor Eric Garcetti said this was "the heaviest moment I've experienced" since the riots in 1992 that were sparked by the acquittal of police over the beating of Rodney King.
In New York, some 20 police cars were burned and dozens of arrests made. Video also showed a police car driving into a crowd of protesters. Mayor Bill de Blasio said the situation was not started by the officers, but Congress Representative Alexandria Ocasio-Cortez said his comments were unacceptable and he should not be making excuses for the officers.
Chicago Mayor Lori Lightfoot imposed a 9 p.m. to 6 a.m. curfew until further notice, saying she was "disgusted" by the violence.
"I've seen protesters hurl projectiles at our police department . . . bottles of water, urine and Lord knows what else," she said.
Although in most places curfews were observed by the majority, also in most places there was evidence of defiance.
In Atlanta, protesters remained on the streets after the curfew began, damaging property and vehicles. Dozens of arrests were made.
Minneapolis, George Floyd died, has seen less violence overnight. Some 700 National Guard officers are aiding police and they acted quickly to enforce the curfew imposed there. The Star Tribune said the action had so far headed off the unrest of the previous night.
For the second day running, a large crowd of protesters taunted National Guard officers outside the White House in Washington, DC.
Indianapolis was one of the cities that had seen peaceful protests during the day turn violent later. At least one shooting death has occurred, but police said no officers had discharged weapons.
In under-curfew Philadelphia, 13 police officers were hurt and at least 35 arrests made as stores were looted, police cars torched and buildings defaced.
Overnight curfews have also been declared in Miami, Portland and Louisvillen, among other cities.
San Francisco is the latest to impose a curfew, announced by Mayor London Breed for 10 p.m. on Sunday, after looting and violence. (BBC)