1970, when Radicalesbians, a radical feminist activist group of 20 lesbians, including novelist Rita Mae Brown, took over the Second Congress to Unite Women, a women's conference in New York City. Uninvited, they lined up on stage wearing matching T-shirts inscribed with the words "Lavender Menace", and demanded the microphone to read aloud their manifesto, "The Woman-Identified Woman", which laid out the main precepts of their movement. Later on, Adrienne Rich incorporated this concept in her essay "Compulsory Heterosexuality and Lesbian Existence", in which she unpacks the idea that patriarchy dictates women to be focused on men or to be "men-identified women. Becoming women-identified women, i.e. changing the focus of attention and energy from men to women, is a way to resist the patriarchal oppression". Contrary to some popular beliefs about "man-hating butch dykes", lesbian feminist theory does not support the concept of female masculinity. Proponents like Sheila Jeffreys (2003:13) have argued that "all forms of masculinity are problematic". This is one of the principal areas in which lesbian feminism differs from queer theory, perhaps best summarized by Judith Halberstam's quip that "If Sheila Jeffreys didn't exist, Camille Paglia would have had to invent her." The overwhelming majority of the activists and scholars associated with lesbian feminist theory have been women; however, there are a few exceptions. For instance, political theorist Eugene Lewis, whose critique of patriarchal society explores the parallels between the theatrical mockery of women in the works of C.S. Lewis (no relation) and underground male prostitution rings, describes himself as "a lesbian feminist in the ideological sense". Womyn's culture "Womyn" along with "wimmin" and "womin" were terms created by alliances within the lesbian feminist movement to distinguish them from men and masculine (or "phallogocentric") language. The term "women" was seen as derivative of men and ultimately symbolized the prescriptive nature of women's oppression. A new vocabulary emerged more generally, sometimes referencing lost or unspoken matriarchal civilizations, Amazonian warriors, ancient – especially Greek – goddesses, sometimes parts of the female anatomy and often references to the natural world. It was frequently remarked that the movement had nothing to go on, no knowledge of its roots, nor histories of lesbianism to draw on. Hence the emphasis on consciousness-raising and carving out new (arguably) "gynocentric" cultures. Salsa Soul Sisters, Third World Wimmin Inc organization united lesbian feminists and womanists of color. Lesbians and mainstream feminism As a critical perspective, lesbian