When I was 17 I worked, part time, at the Academy Cinema which showed a certain class of film. I collected all the posters. How I wish I had kept them. I had the two above :)
I think that anyone who pays to go to a match can do what they like (obnoxious behaviour apart) be it clapping away supporters, shining their torches, screaming for policemen, falling asleep, moaning about catering, trains etc. Who are these people who think that they can define how supporters...
The perpetrators are simply worthless scum, a total waste of oxygen. Let's hope that they never get into the situation where procreation of potential similarly degenerate offspring is possible.
I went to a Grammar School (boys only) from 1st Form to Upper 6th. The whole experience was marred by sadistic, bullying "Masters" I did, however, get a very good education because you had no option other than to learn or suffer the consequences. A levels then were all on final exams, no...
Surely it's not beyond 21st century technology to develop a tattoo system that could be removed, without a trace, at a later date, should the owner choose to do so. That way tattoos could be then be, simply, a generation / rebellion / love / statement choice. A fortune in the making for whoever...