Bloodied and bruised fans arriving back from Manchester United's Champions League clash in Rome have spoken of their anger at Italian police.
A number of United fans were taken to hospital, three with stab wounds, and some were arrested after clashes with police and Roma fans on Wednesday.
Some supporters arriving at Manchester Airport were bandaged and others had head wounds.
"The police were beyond control," said one eye-witness.
During the game, which Roma won 2-1, both sets of fans could be seen throwing missiles at each other.
Uefa has announced an investigation into the crowd trouble at the Stadio Olimpico, although United fans claimed it was Italian police who made the situation worse.
The doctor said I was very lucky to be alive - I was 2cm away from being dead
Manchester United fan
The Independent Manchester United Supporters Association (IMSA) led the condemnation of police for what it said were "hideous" attacks on fans.
Spokeswoman Carly Lyes, 23, said: "There was no need for the brutal level of violence they showed.
"The police charged in from all angles and were hitting people indiscriminately.
"They didn't care who got hurt. People were running all over the place trying to get away. It was chaos."
Businessman Stephen Fitzsimons, 53, from Stretford, Greater Manchester, was knifed in the groin as he made his way to the ground with three friends.
He was taken to hospital and twice underwent emergency surgery to control his bleeding.
Mr Fitzsimons, who hopes to be released from hospital on Saturday, told BBC Radio Manchester: "No police have been to see me, it's disgusting.
"The doctor said I was very lucky to be alive - I was 2cm away from being dead."
Some witnesses inside the ground spoke of terrified women and children running away from the police during one baton charge, while a disabled man was reportedly knocked out of his wheelchair.
I've been following United for 30 years across Europe and I've never seen anything like it
Steve Morris, from Stretford
Uefa to investigate Rome violence
BBC correspondent Christian Fraser, who was in the stadium, said trouble flared after Roma fans ran towards the perspex partition which separated the supporters.
He said Manchester United fans reacted and the police moved in with their batons in a response that was "at best robust and in some cases some officers went completely over the top".
Source: - http://news.bbc.co.uk/1/hi/england/manchester/6528597.stm