A slave trader's statue in Bristol has been torn down and thrown into the harbour during a second day of anti-racism protests across the UK.
In London, largely peaceful demonstrations in London on Saturday ended in some clashes with police.
Thousands of protesters massed on Sunday outside the US embassy in London before moving towards Whitehall. Other protests have been taking place in Manchester, Wolverhampton, Nottingham, Glasgow and Edinburgh.
In Bristol, protesters used ropes to pull down the bronze statue of Edward Colston, a prominent 17th Century slave trader, who has been a source of controversy in the city for many years.
Colston was a member of the Royal African Company, which transported about 80,000 men, women and children from Africa to the Americas.
On his death in 1721, he bequeathed his wealth to charities and his legacy can still be seen on Bristol's streets, memorials and buildings.
After the statue was toppled, a protester posed with his knee on the figure's neck - reminiscent of the video showing George Floyd, the black man who died while being restrained by a Minnesota police officer.
The statue was later dragged through the streets of Bristol and thrown into the harbour. The empty plinth was used as a makeshift stage for protesters.
Home Secretary Priti Patel called the tearing down of the statue "utterly disgraceful", adding that "it speaks to the acts of public disorder that have become a distraction from the cause people are protesting about".
"It's right the police follow up and make sure that justice is undertaken with those individuals that are responsible for such disorderly and lawless behaviour," she said.
In a statement, Avon & Somerset police confirmed there would be an investigation into the "act of criminal damage".
Historian Prof David Olusoga told BBC News that the statue should have been taken down long before.
He said: "Statues are about saying 'This was a great man who did great things.' That is not true, he [Colston] was a slave trader and a murderer."
Aerial footage in London showed thousands more protesters flooding the roads outside the US embassy in Vauxhall, south London before marching towards Parliament Square and Downing Street.
They appeared to be ignoring warnings from both the police commissioner and Health Secretary Matt Hancock not to congregate and risk spreading the coronavirus.
But free masks, gloves and hand gel were being handed out by volunteers.
Labour's Lisa Nandy backed the demonstrations, saying people "cannot be silent in the face of racism".
The shadow foreign secretary said young people were "right to raise their voices" but urged demonstrators to take precautions and socially distance amid fears that the mass gatherings could prompt another spike in coronavirus cases.
Ms Nandy told the BBC's Andrew Marr she was "proud" of young people demanding change following mass anti-racism protests across the UK on Saturday.
"I think it's one of the most important things about living in a free society is that people can go out and protest," she said.
Authorities are hoping that the clashes, which broke out near Downing Street on Saturday evening between police and protesters, will not be repeated.
Missiles and fireworks were aimed at police and bikes were also thrown by some demonstrators.
The Metropolitan Police said 14 officers were injured, including a mounted officer who came off a horse as it bolted down Whitehall, with a further 13 hurt during demonstrations earlier in the week.
Metropolitan Police Commissioner Cressida Dick said she was "appalled" by the scenes of unrest on Saturday night, which led to 14 arrests.
In a statement on Sunday, she added: "There is no place for violence in our city. Officers displayed extreme patience and professionalism throughout a long and difficult day, and I thank them for that.
"I would urge protesters to please find another way to make your views heard which does not involve coming out on the streets of London, risking yourself, your families and officers as we continue to face this deadly virus."
Ms Patel condemned the actions of those involved and said there was "no excuse for violent behaviour".
"These protests should stop, they should not go ahead and people must be mindful and stick with the rules that have been put in place.
"We have guidelines that basically say it is illegal for gatherings of more than six people to get together.... It is not in the interest of public health and it is certainly not going to assist the NHS or protect lives."