On February 6, 1968, Dr. Martin Luther King, Jr., stepped up to the pulpit to warn against the use of nuclear weapons. Addressing the second mobilization of the Clergy and Laymen Concerned About Vietnam, King urged an end to the war, and warned that if the United States used nuclear weapons in Vietnam the earth would be transformed into an inferno that "even the mind of Dante could not envision." Then, as he had done so many times before, King made clear the connection between the black freedom struggle in America and the need for nuclear disarmament: