to bring about the reversal of the "separate but equal" doctrine announced by the Supreme Court's decision in Plessy v. Ferguson. The NAACP's Baltimore chapter, under president Lillie Mae Carroll Jackson, challenged segregation in Maryland state professional schools by supporting the 1935 Murray v. Pearson case argued by Marshall. Houston's victory in Missouri ex rel. Gaines v. Canada (1938) led to the formation of the Legal Defense Fund in 1939. The campaign for desegregation culminated in a unanimous 1954 Supreme Court decision in Brown v. Board of Education that held state-sponsored segregation of public elementary schools was unconstitutional. Bolstered by that victory, the NAACP pushed for full desegregation throughout the South. NAACP activists were excited about the judicial strategy. Starting on December 5, 1955, NAACP activists, including Edgar Nixon, its local president, and Rosa Parks, who had served as the chapter's Secretary, helped organize a bus boycott in Montgomery, Alabama. This was designed to protest segregation on the city's buses, two-thirds of whose riders were black. The boycott lasted 381 days. In 1956 the South Carolina legislature created an anti-NAACP oath, and teachers who refused to take the oath lost their positions. After twenty-one Black teachers at the Elloree Training School refused to comply, White school officials dismissed them. Their dismissal led to Bryan v. Austin in 1957, which became an important civil rights case. In Alabama, the state responded by effectively barring the NAACP from operating within its borders because of its refusal to divulge a list of its members. The NAACP feared members could be fired or face violent retaliation for their activities. Although the Supreme Court eventually overturned the state's action in NAACP v. Alabama, , the NAACP lost its leadership role in the Civil Rights Movement while it was barred from Alabama. New organizations such as the Southern Christian Leadership Conference (SCLC, in 1957) and the Student Nonviolent Coordinating Committee (SNCC, in 1960) rose up with different approaches to activism. Rather than relying on litigation and legislation, these newer groups employed direct action and mass mobilization to advance the rights of African Americans. Roy Wilkins, NAACP's executive director, clashed repeatedly with Martin Luther King Jr. and other civil rights leaders over questions of strategy and leadership within the movement. The NAACP continued to use the Supreme Court's decision in Brown to press for desegregation of schools and public facilities throughout the country. Daisy Bates, president of