There's various interpretations by the psychologists Roma, most on em ballax. My interpretation is pride in your town and defending it's name. Adrenaline is another.
I was never one to look for trouble although some of the lads we went wi were rough and ready. It was always abart evin a good day art, evin a laugh, a few beers, evin a craic and of course the football but if trouble came then we wouldn't shirk it. Crazy like tha sez. A look back now and cringe. Misspent youth, tha sooin grows art o it.
Them Danny Dyer films are exaggerated and in reality are not a true portrayal of proper football hooligans. The best hooligan film I've seen is 'The Firm' directed by Alan Clarke(Scum, Made In Britain) starring Gary Oldman.