This chapter argues that segregation generated organized opposition from African Americans and a small group of whites that challenged the system. Segregation was rigid, capricious, and designed to demonstrate white power. While it kept most blacks in menial positions, a small black middle class emerged that produced leaders who attacked Jim Crow. The organization leading the charge was the NAACP, which developed publicity, lobbying, and litigation campaigns. The effort gained steam in the 1930s, as a cadre of black lawyers challenged segregated education, the CIO and the Communist party championed civil rights, and the New Deal gave blacks a voice in federal policy. It further accelerated during World War II as the federal government challenged workplace discrimination, membership in civil rights organizations swelled, black veterans demanded their rights, and the Supreme Court became more aggressive on civil rights.