Why are you so sure? How do you know I wasn't at this football match you speak of and was one of the miscreants that you are judging a whole town on?
Well as they say, you can always judge a town by it's most successful football team.
While it is entirely possible that you were at the Dundalk - Rovers match a few years ago, I have a feeling that you weren't. In my experience the majority of smelly rockers don't even like football I think it can be traced back to some sort of trauma in childhood.
A wise man once said "never trust a man who doesn't like football" and I agree with him.