W.E.B. Du Bois became famous for his contributions to the early civil rights movement. As a prominent African American intellectual and activist, he co-founded the NAACP and advocated for racial equality and education. Du Bois was a vocal critic of racism and worked tirelessly to challenge social injustices through his writings and organizing efforts. His emphasis on the importance of higher education and black leadership laid the groundwork for future civil rights initiatives, making him a key figure in the pursuit of social justice.