Society and literature creates and maintains power differences between some majority (a “norm and minorities of any kind (for example, non-strait, non-white, non-Christian, or non-Eurocentric). Which the majority defines as “outside its norm” (thus “abnormal”). From about the 1970s, this is Marxist applied to person identity. It arose directly from Feminism, as Gay and Lesbian (queer) Americans noticed that they also shared the “outsider” experiences of women and African-Americans. It is now a standard approach to analysis of any insider-versus-outsider relation in society or literature.