The National Organization for Women, the United States' largest feminist organization, is founded.

The National Organization for Women (NOW) is an American feminist organization. Founded in 1966, it is legally a 501(c)(4) social welfare organization. The organization consists of 550 chapters in all 50 U.S. states and in Washington, D.C. It is the largest feminist organization in the United States with around 500,000 members. NOW is regarded as one of the main liberal feminist organizations in the US, and primarily lobbies for gender equality within the existing political system. NOW campaigns for constitutional equality, economic justice, reproductive rights, LGBTQIA+ rights and racial justice, and against violence against women.

Feminism is a range of socio-political movements and ideologies that aim to define and establish the political, economic, personal, and social equality of the sexes. Feminism holds the position that modern societies are patriarchal—they prioritize the male point of view—and that women are treated unjustly in these societies. Efforts to change this include fighting against gender stereotypes and improving educational, professional, and interpersonal opportunities and outcomes for women.