The US president's supporters and anti-Trump protesters clashed with each other during demonstrations on Tuesday in central London not far from Trafalgar Square.
READ MORE: Trump Calls Reports of Protests in London Against His Visit to UK 'Fake News'
POTUS earlier reacted to the reports about massive protests in London against his visit calling it "fake news", although, according to him, he "did see a small protest today when I came, very small".
The anti-Trump rally comes as President Donald Trump and First Lady Melania are in the United Kingdom on a three-day state visit.
The president is expected to underscore the importance of the bilateral relationship between the US and UK amid anxieties over Brexit and the upcoming resignation of UK Prime Minister Theresa May.