The underlying battle in the film "Greenstreet hooligans" is the battle between two football clubs in London and the fight between the two teams fan base. In Europe soccer is the royal sport, thats what everyone grows up playing and watching so the two teams fans are pretty crazy. Each team has there own 'gang' of fans that will take everything to the next level and start fights with the other teams gangs for no reason, just strictly for the love for their team. I mean these gangs are full of all of the same people (London natives) and there killing each other just because of a meer game of soccer. I mean I've seen some pretty intense fans in the United States, that will do almost anything to insure their team a victory, but the degree these fans take it too is nuts.