Collective identity refers to a shared sense of belonging to a group based on real or imagined attributes. It is a perception that may be constructed rather than directly experienced. Collective identities can be imposed by outsiders and depend on some acceptance by those they are applied to. The document discusses how collective identities are mediated and often more a construction than a true reflection. It explores how young people are represented in media with dominant negative images and how they create their own subcultures and collective identities with their own values and codes of conduct.