" In the early 1960s, Rawls wrote that the injustices of Jim Crow were not a topic for philosophical discussion. The morality of Jim Crow was clear-cut in its brutal injustice. The circle around Rawles was more concerned with what Isaiah Berlin declared the 'most fundamental of all political questions' - the problem of political obligation, and its mirror, disobedience. Ethical philosophers concerned with finding a moral basis for the rules of society now looked for a moral basis for breaking them. "

― , In the Shadow of Justice: Postwar Liberalism and the Remaking of Political Philosophy