Milkshake was thrown at a man during an incident in London's Parliament Square on Tuesday amid arguments between groups supporting and against U.S. President Donald Trump, who is in Britain on a three-day visit.

Video from the protest, shot by a reporter for London radio station LBC, showed a male Trump supporter being surrounded by several anti-Trump protesters who chanted "Nazi scum!" to his face.

Amid the scuffle a milkshake was seen being thrown at the Trump supporter, landing on his head and dripping down his face. The man, who was later pictured wearing a 'Make America Great Again' hat, then threw the milkshake back at the cheering crowd.

As the protesters continued to chant at the Trump supporter, voices of several people could be heard in the video telling an anti-Trump female protester: "You're just as bad as this guy!"

According to a Reuters photographer at the scene, the incident started with the pro- and anti-Trump groups chanting at each other.

The protesters have been largely kept away from U.S. President Donald Trump, with roads closed around Buckingham Palace and Downing Street.