The National Association for the Advancement of Colored People primarily used legal and legislative methods to fight for equality for African-Americans. This included challenging discriminatory laws in court and lobbying for legislation to make discrimination illegal.
One of the most famous court cases involving the NAACP was Brown v. Board of Education, which led to the desegregation of public schools in 1954. The case also played a significant role in desegregating the South entirely. The NAACP also conducted research into segregated conditions. Segregation was allowed under the doctrine of "separate but equal," and NAACP investigations were instrumental in proving that it was inherently unequal.
The NAACP also worked with politicians to draft anti-lynching laws and fair housing laws to protect African-Americans from being threatened or chased out of towns. NAACP activists gave speeches and wrote articles drawing attention to discrimination and prejudice, and they rallied grassroots support to help encourage lawmakers to pass anti-discrimination laws.
The NAACP is one of the oldest Civil Rights organizations in the United States, but many others came into being during the Civil Rights Movement in the 1950s and 1960s. The NAACP often worked with these other groups to organize peaceful protests. They played a significant role in organizing the March on Washington, which was one of the largest and most famous protests of the era. The NAACP was founded on principles of nonviolence and peaceful resistance.