Under brilliant and dedicated leadership, the N.A.A.C.P. moved relentlessly to win many victories in the courts. The most notable of these established the right of the Negro to participate in national elections, striking down evasive devices such as the “grandfather clause,” white primaries and others. Beyond doubt, the doctrine of change through legal recourse reached flood tide in the education decisions. Yet the failure of the nation, over a decade, to implement the majestic implications of these decisions caused the slow ebb of the Negro’s faith in litigation as the dominant method to achieve his freedom. In his eyes, the doctrine of legal change had become the doctrine of slow token change and, as a sole weapon of struggle, now proved its unsuitability. At the time of this growing realization, during the mid-fifties, Negroes were in the grip of a crisis. Their movement no longer had a promising basic doctrine, a detailed and charted course pointing the way to their freedom.
Martin Luther King Jr., Why We Can’t Wait, published 1964