A group of right-wing protesters who were shouting "vile racist abuse" after a demonstration in Rotherham "got rather more than they bargained for" when violence broke out in the centre of the town, a court has heard.

A jury was shown CCTV footage of violent scenes in the South Yorkshire town when a group associated with the far-right Britain First group clashed with a group of mainly Asian men.

The footage showed fighting in the street between the two groups before police arrived in numbers to part them.

It was shown at Sheffield Crown Court at the opening of the trial of 10 Asian men who all claim they were acting in self-defence or defending others after they were attacked following a right-wing demonstration and anti-fascist counter protest in Rotherham on September 5 last year.

Opening the case, prosecutor Paul O'Shea said 800 police were on duty in Rotherham for the Saturday afternoon protests.

He said the planned demonstration by Britain First and other groups, including Yorkshire's Finest, was the latest in a long series of right-wing protests prompted by the revelations of child sexual exploitation in the town.

Mr O'Shea said the protests had caused a number of problems for people in Rotherham.

But, he said, this one had provoked added local anger as it followed the racist murder of 81-year-old Mushin Ahmed, who was attacked on his way to the mosque in Rotherham on August 10 2015.

"It is in the context of that incident, which you can well appreciate caused shock and outrage in the local community, that on September 5, when yet another march was planned, the local community did involve itself in the counter-protest," Mr O'Shea told the jury.

"The death of that man had a profound impact and the attendance yet again of those espousing certain views and opinions on this occasion was not something that could be ignored. People had had enough."

Mr O'Shea explained how the violence erupted as people were leaving the rival demonstrations and after a group associated with Britain First had gone into a pub called the William Fry, known as The Fry.

The prosecutor said: "The Crown say in the clearest of terms to you that the men in The Fry, or at least some of them, were drunk, aggressive and shouting vile racist abuse at the Asian men - 'Come on you P*ki bastards' and other similarly offensive phrases. Not exactly original but certainly offensive.

"They were, you may think, out to cause trouble and, when the opportunity presented itself, they took it.

"But they got rather more than they bargained for here, and fairly quickly, because they became significantly outnumbered by a great many men, many of whom were on the way home from the counter-protest.

"Having started the trouble, as often happens in these sorts of circumstances, they found themselves in serious trouble themselves and on the receiving end of something that they started."

Mr O'Shea said the 10 men on trial were part of the group of Asian men. Those from the "other side" will go on trial at a later date, he told the jury.

He said: "All of them (the defendants) suggest that whatever it was that they did was in reasonable self-defence in respect of themselves as individuals, defence of another person or persons."

Asif Zaman, 47, of Wellgate Mount, Rotherham; Mohammed Saleem, 43, of Mount Street, Rotherham; Arshad Khan, 44, of Wellgate Mount, Rotherham; Abrar Javid, 37, of St Johns Road, Rotherham; Imran Iqbal, 29, of Clough Road, Rotherham; Nasrum Rashid, 21, of Fraser Road, Rotherham; Moshin Mahmood, of James Street, Rotherham; Sadaqat Ali, 39, of Milton Road, Rotherham; Shaban Ditta, 31, of Cambridge Crescent, Rotherham; and Akaash Nazir, 21, of Cow Rakes Lane, Rotherham, all deny violent disorder.

Zaman also denies possession of an offensive weapon.

The jury was told that two other men have admitted violent disorder.

The trial continues.