I think people here dislike the song because they make a strange paralel between the song and football. But this song uses hooliganism as key approach to a bigger subject: identity. Or if you prefer: teeneagers identity.
The guy described in this song is a teenager who has a desperate need for an identity. In my country, kids who belogs to "barras bravas" are seeing with certain amount of respect and fear by their peers (except to those who belong to a different "barra"... because the former "is the enemy"). Anyway, the person who looks at this "hooligan kid" is an adult. For me is one of his teachers at school. I'm a teacher too, and everytime some of my students started to tell the story of last weekend game, it always remembered me this song.
It seems that this teachers knows him since he was a boy and saw this "evolution". Anyway, he realizes that he's in a group he doesn't want to be and cannot go away (You've gotta get out gotta get away//But you're in with a clique it's not easy to stray//You've gotta admit you're just living a lie//It didn't take long to work out why) ... but they are pretty cool, and being associted to them makes you cool to (It's hard to say why you got involved//Just wanting to be part//just wanting to belong...). He's concious of what he has done, and he knows those have been bad things, but ath the end, isn't it a childs game? (Some of the things that you've done//you feel so ashamed//After all it's only a game... isn't it?) It is interesting because kids, especially those with familiar and or social problems, consider those actions as "kid's games". Anyway, this guy knows that he cannot "keep his lie" too long, since on Monday he needs to behave differently (You're a weekend warrior when//you're one of the crowd//But it's over, just look at you now...).
What is even more interesting is the fact that these people doesn't like football at all. During all the match they are more concerned of what they will do with th fans from the other team, or how they are going to challenge the police officers or guards in charge of the security. You can ask them about the players that were playing in that match and they rarely name 3 or 4 of them. As we say in my country they are "Hinchas de la barra y no del equipo" (fans of the fan's club and not the team itself). I'v tried it a lot of times with mys students and the one that named more players couldn't raise its number over 7.