"Altermondialist movement" - hey, that's a nice word. A nice English / French combination. You know, I really envy you French for your effort to maintain your language - most Germans actively help in destroying their own language and replacing it with wannabe-English. There is no powerful commision that invents words or proposes German word creations in order find good expressions for any new inventions / technologies / phenomena.
But back to topic: I believe you that Punk bands are politically or socially engaged, and beyond pure "fuck society" (we live from it, but still, fuck it anyway) lyrics... many Metal bands are, too, although there are also Nazis around - which sucks big time. I just think that these directions have lost homogenity and importance. Maybe the relative (and in many cases, superficial) freedom of our current societies prevents the outbreak of a rebellious attitude and the uprising of a homogeneous movement just by making lives comfortable enough for most people to keep quiet.
Besides, it's one thing to support an "altermondialist" attitude by going to a Punk concert, but it's something different to
live according to that attitude. The Hippies, for example, had a whole lifestyle of their own - if they wanted, so what? They got stoned, put some flowers in their hair and walked stark nekkid through town - until somebody arrested them. They really started living in a different way, educating their children in a different way (by allowing them to do almost anything), and so forth. Nowadays, people go to a concert, shout some anti-globalisation, anti-capitalism, anti-[insert what you most hate here], and then they go home, get some sleep, and the next day you will see them sitting at their office desks with shirt and tie, doing what everybody else does. I wouldn't even exclude myself from that, btw. It's kind of sad, but then again I can understand quite well that many people simply have lost hope, while those who still keep talking about "A different world is possible" are a suspicious mixture of commie / anarchist relicts from the 70's, labour union guys and harmless, but also clueless and permanently stoned social work students with rastas, Bob Marley buttons and military jackets scribbled with age-old left-wing slogans - not to forget the mandatory Che Guevara flag over their beds... *yawn*. This is so outlived, so stale - I am yet to see a protest movement that has the potential to be taken seriously by those in power, that fights for
realistic goals and is not necessarily either outdated left-wing or arch-conservative, stupid Nazi scum.
Am I talking you guys down, btw? That's sure not my intention... you gotta kick me in order to get me to stop, that's all...

just wanna keep some kind of debate alive - after all, that's the place for such stuff, right?