Thurgood Marshall was an influential American civil rights lawyer who fought tirelessly for desegregation. As a key figure in the landmark Supreme Court case Brown v. Board of Education, he successfully argued against racial segregation in public schools, leading to the Court's unanimous decision to declare it unconstitutional in 1954. Marshall's legal career and advocacy for civil rights earned him the distinction of becoming the first African American Supreme Court Justice in 1967. His legacy is celebrated for advancing justice and equality.