4B movement

4B or "Four Nos" is a South Korean radical feminist movement whose proponents do not date men, marry men, have sex with men, or have children with men. The name refers to its defining four tenets which all start with the Korean-language term bi (Korean: 비; Hanja: 非). The prefix bi- is Sino-Korean in origin, functioning similarly to the English prefix "un-" or "non-". Because it sounds like the letter "B", the movement’s name simultaneously functions as a number and an acronym. The movement emerged between 2017 and 2019 on Twitter and on the website WOMAD. It has since spread internationally, namely to the United States after the 2024 US presidential election. Conservatives perceive the movement as a representation of anti-family values, claiming it promotes misandry and escalates gender conflict. The movement is deemed fringe in South Korea, and it has since reportedly declined there. In South Korea, a portion of the movement's followers, particularly those of WOMAD, were described by several sources as being misandrist, transphobic, and homophobic towards gay men.