The document discusses the representation of social groups in the author's film. There are two main characters - David Star, a Caucasian middle-class boxer from London, who is the protagonist representing good; and Tank, a lower-class youth of Caribbean origin involved in criminal activities, who is the antagonist representing evil. The supporting characters around David would be middle-class family and friends with no particular attributes, while those around Tank would be part of a gang and thus mostly young, low-class/working-class youths of mixed race, challenging stereotypes.