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Pro- and anti-Donald Trump protesters briefly sparred outside Buckingham Palace as the US president arrived for a three-day state visit.
A woman wearing a “Make America Great Again” cap became engaged in a heated row with another member of the crowd over Robert Mueller’s investigation into Russian interference in the 2016 US election.
The argument started after the woman began shouting accusations of bias and “fake news” towards the media tents.
The two then became engaged in a minute-long verbal confrontation.
The crowds waiting to see Mr Trump arrive at Buckingham Palace were largely made up of tourists.
Show all 40 1 /40President Trump in Britain for state visit: In pictures President Trump in Britain for state visit: In pictures President Trump, Prime Minister Theresa May and Jeremy Hunt, the foreign secretary, pose for a photo during dinner at Winfield House, the US ambassador's residence in London
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President Trump in Britain for state visit: In pictures President Trump and Prime Minister Theresa May share a laugh outside of Downing Street
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President Trump in Britain for state visit: In pictures President Trump walks with the Queen while other guests follow as they arrive at a state banquet in Buckingham Palace
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President Trump in Britain for state visit: In pictures The red carpet is rolled out in front of Downing Street prior to the arrival of President Trump
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President Trump in Britain for state visit: In pictures President Trump meets with prime minister Theresa May for a business roundtable meeting at St James' Palace in London
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President Trump in Britain for state visit: In pictures President Trump makes a speech at the state banquet in Buckingham Palace
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President Trump in Britain for state visit: In pictures President Trump and the Queen share a toast at the state banquet in Buckingham Palace
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President Trump in Britain for state visit: In pictures Philip May and Melania Trump attend a garden party for families of Downing Street staff on the second day of President Trump's visit
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President Trump in Britain for state visit: In pictures President Trump meets with the Queen at Buckingham Palace as he arrives on the first day of his three-day state visit
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President Trump in Britain for state visit: In pictures A mixed crowd of supporters and detractors waits outside Buckingham Palace ahead of the arrival of President Trump
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President Trump in Britain for state visit: In pictures President Trump and the Queen view an exhibition of items from the Royal Collection that are of historical significance to the US
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President Trump in Britain for state visit: In pictures President Trump inspects an honour guard during a welcome ceremony in the garden of Buckingham Palace
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President Trump in Britain for state visit: In pictures The police block a road leading to Westminster Abbey, where Donald Trump is visiting on the first day of his state visit
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President Trump in Britain for state visit: In pictures President Trump walks with Prince Charles in the gardens of Buckingham Palace
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President Trump in Britain for state visit: In pictures The McDonalds restaurant on Whitehall near to Westminster Abbey provides an excuse as to why they are not serving milkshakes today, though many have speculated that it is due to the recent trend of pouring milkshakes over right wing political figures
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures Protesters with anti-Trump signs stand on Whitehall near Downing Street
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures President Trump and First Lady Melania are welcomed by the Queen, Prince Charles and Camilla at Buckingham Palace
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President Trump in Britain for state visit: In pictures King's Troop Royal Horse Artillery perform a gun salute to honour President Trump's state visit and to mark the 66th anniversary of Queen Elizabeth's coronation at Green Park
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President Trump in Britain for state visit: In pictures A protester stands on Whitehall near Downing Street holding a sign with an anti-Trump message
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures A supporter welcomes the president's visit on Whitehall near Downing Street
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures A miniature Trump balloon in the protest on Whitehall near Downing Street
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures A protester wears a "No Trumps" card in his hat as he walks nearby to Buckingham Palace
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President Trump in Britain for state visit: In pictures President Trump walks with Prince Charles and a Buckingham Palace guard as he is welcomed on the first day of his three-day state visit
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President Trump in Britain for state visit: In pictures Dedicated pro-Trump and pro-Brexit campaigner Joseph Afrane awaits the president's arrival at Buckingham Palace
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President Trump in Britain for state visit: In pictures Crowds watch as Marine One, the helicopter carrying President Trump, arrives at Buckingham Palace
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President Trump in Britain for state visit: In pictures President Trump and First Lady Melania depart from Air Force one at Stansted Airport
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President Trump in Britain for state visit: In pictures Supporters of the president - and detractors of London mayor Sadiq Khan - await his arrival at Buckingham Palace
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures President Donald Trump salutes an honour guard as he and first lady Melania Trump arrive at Stansted Airport
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President Trump in Britain for state visit: In pictures President Trump and First Lady Melania arrive at Winfield House, the US ambassadors residence in London
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President Trump in Britain for state visit: In pictures An anti-Trump protester awaits the president's arrival at Buckingham Palace
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures Dedicated pro-Trump and pro-Brexit campaigner Joseph Afrane awaits the president's arrival at Buckingham Palace
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures A protester mowed this message into a field nearby to Stansted Airport
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President Trump in Britain for state visit: In pictures An anti-Trump protester awaits the president's arrival at Buckingham Palace
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures A marching band parades down the Mall in front of Buckingham Palace ahead of the arrival of President Trump
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President Trump in Britain for state visit: In pictures Supporters of the president await his arrival at Buckingham Palace
Tom Batchelor / The Independent
President Trump in Britain for state visit: In pictures President Trump shakes hands with Jeremy Hunt, the foreign secretary
Sky News
President Trump in Britain for state visit: In pictures A policeman stands on the Mall, one of the roads leading to Buckingham Palace that is closed for the president's visit
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President Trump in Britain for state visit: In pictures Air Force One lands carrying U.S. President Donald Trump and First Lady Melania Trump arriving for their state visit to Britain
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President Trump in Britain for state visit: In pictures An honour guard await Trump's departure from Air Force One at Stansted Airport
Sky News
President Trump in Britain for state visit: In pictures President Trump and First Lady Melania depart from Air Force one at Stansted Airport
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Many were unaware of the incoming president, with just a small number of pro- and anti-Trump demonstrators.
A larger rally against Mr Trump is scheduled for Tuesday, in central London .
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