QPR boss Neil Warnock joined the chorus of people condemning those involved in the trouble at Elland Road, when Leeds met Manchester United in a midweek Carling Cup tie, and believes it was a sad night for English football.
"What are you going to do? Are you going to ban everybody?" he said.
"I mean there were thousands, it wasn't just one or two the other night. It is horrible.
"I obviously get called names at certain local derbies that I've been involved in and I try and smile at the crowd without actually bringing it on.
"But I think the other night it went beyond that. I thought it was very sad the other night.
"The Munich and the Istanbul chants, I don't think English football came out of that with any credit.
"I thought it was disappointing because of the families involved. You've got to respect people like that.
"Football is a game and I hate to see things like that because it takes away from what we are all in it for.
"It doesn't divide opinion because I don't think there's anyone who feels people were right to do what they did the other night.
"Why they do it, I just don't know."