The feminist sex wars, also known as the lesbian sex wars, or simply the sex wars or porn wars, are terms used to refer to collective debates amongst feminists regarding a number of issues broadly relating to sexuality and sexual activity. Differences of opinion on matters of sexuality deeply polarized the feminist movement, particularly leading feminist thinkers, in the late 1970s and early 1980s and continue to influence debate amongst feminist to this day. The sides were characterized by anti-porn feminist and sex-positive feminist groups with disagreements regarding sexuality, including pornography, erotica, prostitution, lesbian sexual practices, the role of trans women in the lesbian community, sadomasochism and other sexual issues. The feminist movement was deeply divided as a result of these debates.