You cannot understand the Ultra mentality if you're not one yourself. Our club is more to us than anything else on earth, including our family, friends, pets, whatever.
When our team loses we feel physical pain and indescriptible anger at other fucks mocking us, that's why we get even by beating the crap out of them, that will learn them to STFU and crawl back under the rocks they came from and if we loose a few teeth in the progress then so be it, we'll beat them even harder next time and destroy a part of their stadium in the progress. Most of us were kids that got beaten up at home, got no jobs, or whatever that angered us so much that we took football to release that anger, in fact I've seen a few that didn't care about winning or losing they just came to steer up shit, when other team brought no ultras they even started fights amongst themselves (I was not like that, I was only pissed when we lose, and I was not in the core of nuts, ultra groups consist of a little core of complete nutcases and 90% of followers; the core are lost for society anyway, they often have tattoos on their forehead, neck and other places that makes it impossible to find a job, start a relation and so on, so they got nothing to loose and are the worst of worst mean bastards)
At least that was it in the eighties and early nineties when I was active, now I'm an old retired fuck who angers himself at the cheating Ladri cunts and inter Merda from behind his computer and has dinner with the wife and kids afterwards. At least in the old times we only used fists and the odd stick but now I hear they use knives and guns, that's a bit too serious for my taste...
But old or not, the spirit remains, not long ago I saw some young assclown run around in a Merda Shirt and I had to restrain myself from not walking up to him and headbutt him into the ground, when I was younger I would've done it without a second thought, but now risking police, jail and other shit doesn't only affect me but my family also so I can contain myself, doesn't mean I stopped hateing the guts out of other teams though lol