Lyndon B. Johnson is the head of the Democratic Party. If he's for civil rights, let him go into the Senate next week and declare himself. Let him go in there right now and declare himself. Let him go in there and denounce the Southern branch of his party. Let him go in there right now and take a moral stand—right now, not later. Tell him don't wait until election time. If he waits too long, brothers and sisters, he will be responsible for letting a condition develop in this country which will create a climate that will bring seeds up out of the ground with vegetation on the end of them looking like something these people never dreamed of. In 1964, it's the ballot or the bullet.

The Ballot or the Bullet (1964) - Speech in Cleveland, Ohio (April 3, 1964)