This essay examines the Second Wave Feminism in the United States, starting from the 1940s. It highlights pivotal historical events, such as Rosa Parks' actions, the FDA's approval of birth control, the Equal Pay Act of 1963, and the Civil Rights Act of 1964. The essay discusses the founding of the National Organization for Women by Betty Friedan and the radical expressions of the movement, including the "bra burning" protests. It explores the ideological divergence into equal rights feminism and radical feminism, and their respective goals. Finally, the essay assesses the impact of the Second Wave Feminism on American society, including increased female participation in the workforce and heightened awareness of gender roles, while referencing relevant literature and scholarly sources.