Three people have been arrested after scuffles broke out as the English Defence League and anti-fascists marched in Cambridge.
Police estimate 300 people took part in the EDL march. A similar number representing United Against Fascism (UAF) and the TUC took part in a counter march in the morning.
Officers were forced to double their cordon on the corner of Silver Street as UAF and EDL protesters came into contact.
Bottles were thrown and several EDL members were taken to the ground by the police.
Later, a police spokesman confirmed that three people had been arrested, although one has now been released without charge.
Alf Polwin, from Peterborough, was among those taken to the ground by police.
He said: "I'm here with my 11-year-old son. I bring him to every march because I want him to see what the real world is like.
"I was trying to protect him when the police started pushing and shoving."
East of England MEP Richard Howitt delivered a speech to the counter march. He said: "We publicly attest that the EDL is not welcome in this city because we cannot let the poison of their ideas seep in to the body of our community.
"I am proud to live and work in this, the most international of cities, where one in 10 of my neighbours comes from black or ethnic minority communities."