Manchester United legend Steve Bruce has hit out at violent fans who turned valid protests into an Old Trafford “riot”.
Bruce, who led United to nine trophies including three titles until the mid-90s, says the demonstrations on Sunday went too far.
Manchester United's game against Liverpool was called off as police and supporters clashed in a protest over the Glazers' ownership.
Flares and smoke bombs were let off as a group stormed Old Trafford and got onto the pitch.
Bruce was pleased that peaceful demos forced the European Super League to collapse, but says it is wrong “when it becomes a riot.
The Newcastle United boss said: “I am all for protest. There is a difference between protest and when it becomes a riot.
“And then I struggle with it. When it becomes the ugly scenes and people are getting injured and policemen are getting carried away then I think it has gone too far.
“Yes protest, and I think the fans were heard in 48 hours and that is why (the Super League) folded down so quickly.
“So when they get games postponed and people are getting injured and it turns into a riot that is not for me. The protests of the fans throughout the country made it pretty clear that they were not going to accept this, and fair play to them.
“Protest yes, riot, no.”
Bruce's former team mate Gary Neville backed the protests saying they won't be going away, because trust had broken down between the fans and the Glazers.
Neville said on Sky Sports: “It's a warning to the owners of the football clubs. We know some fans came in and were reasonably peaceful.
“The fans have spoken. It's not going to go away. Fans don't trust the owners of Manchester United, they don't like them, they think the owners should leave.”
