In "The Established and the Outsiders", Elias and Scotson explain differences in power and rank between two very similar groups - both working class - in a local community studied in the early 1960s. They show how one group monopolised sources of power and used them to exclude and stigmatise members of the other, pinpointing the role of gossip in the process. In a later theoretical introduction, Elias advanced a general theory of power relations, applying the established-outsiders model to changing power balances between classes, ethnic groups, colonised and colonisers, men and women, parents and children, gays and straights. A further theoretical development in the last year of his life is an essay inspired by Harper Lee's "To Kill a Mocking Bird", published here in English for the first time.