YesAllWomen is a Twitter hashtag and social media campaign in which users share examples or stories of misogyny and violence against women. #YesAllWomen was created in reaction to another hashtag #NotAllMen, to express that all women are affected by sexism and harassment, even though not all men are sexist. The hashtag quickly became used by women throughout social media to share their experiences of misogyny and sexism. The hashtag was popular in May 2014 surrounding discussions of the 2014 Isla Vista killings.