Sexual revolution

The sexual revolution, also known as the sexual liberation, was a social movement that challenged traditional codes of behavior related to sexuality and interpersonal relationships throughout the Western world from the late 1950s to the early 1970s. Sexual liberation included increased acceptance of sexual intercourse outside of traditional heterosexual, monogamous relationships, primarily marriage. The legalization of "the pill" as well as other forms of contraception, public nudity, pornography, premarital sex, homosexuality, masturbation, alternative forms of sexuality, and abortion all followed.

The term "first sexual revolution" is used by scholars to describe different periods of significant change in Western sexual norms, including the Christianization of Roman sexuality, the decline of Victorian morals, and the cultural shifts of the Roaring Twenties. Sexual revolution most commonly refers to the mid-20th century, when advances in contraception, medicine, and social movements led to widespread changes in attitudes and behaviors around sex. The sexual revolution was influenced by Freud's theory of unconscious drives and psychosexual development, Mead's ethnographic work on adolescent sexuality in Samoa, Unwin’s cross-cultural studies, and the groundbreaking research of Kinsey and later Masters and Johnson, all of which challenged traditional norms and expanded understanding of human sexuality.

The widespread availability of contraception from the early 20th century onward empowered individuals with reproductive choice, spurred legal and cultural shifts such as Griswold v. Connecticut, and influenced later landmark rulings on privacy, abortion, and LGBTQ+ rights. "Free love" is a related social movement advocating for the separation of the state from sexual matters like marriage and birth control, emphasizing personal freedom in relationships, though it faced decline in the 1980s due to the AIDS crisis.

By the 1970s, premarital and non-marital sex had become increasingly accepted in the United States due to the rise of birth control, later marriages, declining stigma around divorce, and the normalization of casual and non-monogamous sexual relationships.

Several other periods in Western culture have been called the "first sexual revolution", to which the 1960s revolution would be the second (or later). The term "sexual revolution" itself has been used since at least the late 1920s. The term appeared as early as 1929; the book Is Sex Necessary? Or, Why You Feel the Way You Do by James Thurber and E. B. White, has a chapter titled "The Sexual Revolution: Being a Rather Complete Survey of the Entire Sexual Scene". According to Konstantin Dushenko, the term was in use in Soviet Russia in 1925.

When speaking of the sexual revolution, historians make a distinction between the first and the second sexual revolution. In the first sexual revolution (1870–1910), Victorian morality lost its universal appeal. However, it did not lead to the rise of a "permissive society". Exemplary for this period is the rise and differentiation in forms of regulating sexuality.

Classics professor Kyle Harper uses the phrase "first sexual revolution" to refer to the displacement of the norms of sexuality in Ancient Rome with those of Christianity as it was adopted throughout the Roman Empire. Romans accepted and legalized prostitution, bisexuality, and pederasty. Male promiscuity was considered normal and healthy as long as masculinity was maintained, associated with being the penetrating partner. In contrast, female chastity was required for respectable women, to ensure the integrity of family bloodlines. These attitudes were replaced by Christian prohibitions on homosexual acts and any sex outside marriage, including with slaves and prostitutes.^{[better source needed]}

History professor Faramerz Dabhoiwala cites the Age of Enlightenment—approximately the 18th century—as a major period of transition in the United Kingdom. During this time, the philosophy of liberalism developed and was popularized, and migration to cities increased opportunities for sex and made enforcement of rules more difficult than in small villages. Sexual misconduct in the Catholic Church undermined the credibility of religious authorities, and the rise of urban police forces helped distinguish crime from sin. Overall, toleration increased for heterosexual sex outside marriage, including prostitution, mistresses, and pre-marital sex. Though these acts were still condemned by many as libertine, infidelity became more often a civil matter than a criminal offense receiving capital punishment. Masturbation, homosexuality, and rape were generally less tolerated. Women went from being considered as lustful as men to passive partners, whose purity was important to reputation.