Julia Kristeva on "Abjection and sexism"

In Powers of Horror, working with Mary Douglas's Purity and Danger (Douglas, Mary. Purity and Danger, New York: Routledge, 1969.), Kristeva develops a notion of abjection that has been very useful in diagnosing the dynamics of oppression. She describes abjection as an operation of the psyche through which subjective and group identity are constituted by excluding anything that threats one's own (or one's group's) borders. The main threat to the fledgling subject is his or her dependence upon the maternal body. Therefore, abjection is fundamentally related to the maternal function. As Kristeva claims in Black Sun, matricide is our vital necessity because in order to become subjects (within a patriarchal culture) we must abject the maternal body. But, because women cannot abject the maternal body with which they also identify as women, they develop what Kristeva calls a depressive sexuality (see Black Sun). Kristeva's analysis in Black Sun suggests that we need not only a new discourse of maternity but also a discourse of the relation between mothers and daughters, a discourse that does not prohibit the lesbian love between women through which female subjectivity is born.

In Tales of Love, Kristeva suggests that misplaced abjection is one cause of women's oppression (see p. 374). In patriarchal cultures, women have been reduced to the maternal function; that is to say, they have been reduced to reproduction. So, if it is necessary to abject the maternal function to become a subject, and women, maternity, and femininity all have been reduced to the maternal function, then within patriarchy, women, maternity, and femininity are all abjected along with the maternal function. This misplaced abjection is one way to account for women's oppression and degradation within patriarchal cultures.

From:
http://www.cddc.vt.edu/feminism/kristeva.html