President Johnson, left, stands with Solicitor General Thurgood Marshall in Washington on June 13, 1967, following Johnson’s nomination of Marshall to serve as a justice of the Supreme Court, where Marshall had argued 32 cases. In 1954, Marshall won the landmark Supreme Court case Brown v. Board of Education, which declared unconstitutional state statutes that required the segregation of public schools by race. States no longer could condone segregated schools as being “separate but equal.” (© AP Images)