@blackash: no, i live in Italy. in England the problem was really serious, but it was taken care of some years ago - it was fairly simple: effective, immediate punishment for violent acts against the police, and sale of stadiums to clubs.
if fans are aggressive, they get arrested; if they thrash the place, the club pays. the firms moved to fighting in the middle of the street, of course, and there is no way to eradicate violence per se, but at least ordinary people can go to matches without fearing for their lives; both civilian and police casualties have been greatly reduced, because people don't get caught in the cross-fire anymore.
in this country, the only weapon that authorities have against the worst 'fans' is something called the DaSpo, which is basically a restraint order against known hooligans - while a match is being played they have to go to the police station and sign a register. they don't have to stay for the whole duration of the match, however, so they are at liberty to wait for rival fans outside the stadium as soon as it's over (and this is the main circumstance of fighting these days).
the government that preceded the current one passed a law stating that hooligans who have been videotaped while committing violent acts could be arrested up to 36 hours after the match (to allow time for careful tape-viewing) and be detained as if they were caught in the act, ie with the possibility of a fast trial. however, the very same government repealed the law, based on the pressure of some small extremist right-wing groups that are very popular with hooligans.
the current government did not help the criminals directly, but it overlooked guiltily the fact that most stadiums do not comply with the legal security requirements. a batch of football-related laws require people to have a personal ticket with their name on it, to carry ID, and to refrain from covering their features with team scarves (concealing features is a crime per se, but it is specifically mentioned in football-related laws, with the usual excess of regulations in the absence of any material implementation). unfortunately, most hard-core football firms get free group tickets from the clubs, and hence bypass the law.
last night, my cop friend was telling me how hooligans routinely show up to stadium gates with beer in hand, and when the police tell them 'you can't bring alcohol inside the stadium' they just guzzle it down and laugh in the face of policemen.
what rahvin said is also very true. these days, the news media have thought it wise to accord interviews to 'top boys' of football firms, who appeared on TV with their face covered by mephistos, and spewed hatred against the police. there was tremendous publicity for a bunch of 'all cops are bastards' and similar graffiti popping up in several cities. the reporters of course condemned these people, but they were still interviewing them on their show rather than reporting them to the authorities.
on the other hand, you will all know what happened at the G8 protests in Genoa six years ago: a cop shot a protester and killed him, then all hell broke loose. the protester was sporting a heavy fire estinguisher and aiming it at the police. the police car had been cornered and targeted by a volley of stones. those who were coordinating the containment service were probably superficial - we still had the draft, which has since been abolished, and there were young draftees with no experience at all having to stay alive through that hell -, but still the shooter didn't need to be crucified. also, 42 more cops were brought to trial for suspected beatings and counterfeiting of evidence.
as i said, i'm not in favor of arbitrary police brutality, and i'm glad to know that people who have to guarantee my security are more level-headed than a bunch of football casuals. still, there is a tendency to blame the police rather than the criminals.
i remember that in 2003 one of the major news programs in the country ran a tragically ridiculous feature on how the video provided by the police on the G8 facts was supposedly
played in reverse to show cops receding rather than advancing - yes, and it probably contained a satanic message.
edit mark 1: tomorrow, the funerals of the dead policeman are going to be held. i honestly hope that hooligans do not show up. i heard that some of them wanted to be present as a form of repentance and tribute, but it would still be unwise.
edit mark 2: and of course, sicily being sicily (no offense to individual sicilians), it's also very hard to tell where the football hooliganism at a catania-palermo match ends, and where organized crime starts.