Angry exhortation from street corners and stirring calls for the Negro to arm and go forth to do battle stimulate loud applause. But when the applause dies, the stirred and the stirring return to their homes, and lie in their beds for still one more night with no progress in view. They cannot solve the problem they face because they have offered no challenge but only a call to arms, which they themselves are unwilling to lead, knowing that doom would be its reward. They cannot solve the problem because they seek to overcome a negative situation with negative means. They cannot solve the problem because they do not reach and move into sustained action the large groups of people necessary to attract attention and convey the determination of the majority.
Martin Luther King Jr., Why We Can’t Wait, published 1964.