According to Freud's theory, in the earliest stage of a child's psychosexual development, the oral stage , the mother's breast became the formative source of all later erotic sensation. Consequently, the feminist movement to end sexual oppression has and continues to directly contribute to the sexual liberation movement. Purchasing an aphrodisiac and various sex toys became "normal". The sexual revolution was not unprecedented in identifying sex as a site of political potential and social culture. These books began a revolution in social awareness of, and public attention given to, human sexuality. You must never refer to Asian men. The abuse can involve being gang raped by dozens of men during one event. Not an erotic treatise or sex manual, the book nevertheless included frank descriptions of sexuality, and contained illustrations that could have caused legal problems just a few years earlier. By the s, in the United States, it had become rare for women to go into their wedding nights not knowing what to expect. The struggles, skirmishes and rhetorical confrontations happening in the course of these movements also became directly visible to ordinary people in a way they would never have been before; the sense of involvement in a social and sexual shift happening in the present could rapidly win new converts and spread discussions afield. This decision was especially significant, because, of the three books mentioned, Fanny Hill has by far the largest measure of content that seems to appeal to prurient interest, and the smallest measures of literary merit and "redeeming social importance". January February 16, Friday January 12, pm, reception Monday February 5th 7pm, artist talk: It is said that at the time, public morality severely restricted open discussion of sexuality as a human characteristic, and specific sexual practices, especially sexual behaviours that did not lead to procreation. A Feminist Perspective on the Sexual Revolution , Sheila Jeffreys asserted that the sexual revolution on men's terms contributed less to women's freedom than to their continued oppression, an assertion that has both commanded respect and attracted intense criticism. The discovery of penicillin led to significant reductions in syphilis mortality, which, in turn, spurred an increase in non-traditional sex during the mid to late s. Kinsey's books contained studies about controversial topics such as the frequency of homosexuality, and the sexuality of minors aged two weeks to fourteen years. Explicit sex on screen and frontal nudity of men and women on stage became acceptable in many Western countries, as the twentieth century drew towards its close.