My mum works in Sunderland, on a derby day she sees all sorts come in, bites from police dogs, glassing, stabbings, assaults, teeth out, noses broken, fingers broken, deep lacerations from various weapons...and that's just the non football attendees
I understand a bit of rivalry but i've never got my head round the fighting at football...you're all in the same boat, you love football, just go and support your team and enjoy your day....but you always get bell ends running about trying to be Rocky, punching horses, each other and such like, c**ts