Everywhere there is talk of revolution. People are disturbed when they think of the future. There are those who look forward eagerly to a sudden violent change in the social order. It is said that the revolutions which have occurred in continental Europe are symptoms of a world movement; that bourgeois liberal democracy is inevitably drifting toward catastrophe. There are loyal defenders of the existing order who seem to see in any suggested reform signs of revolutionary conspiracy. And there are many liberal-minded people, neither revolutionists nor apologists for entrenched interests, who are confused by the din of excited propagandists. These liberals are not averse to the orderly process of change. They may even welcome what they would like to regard as trends toward a better social system. But they hear it said that liberalism is dead, that parliamentary government is ineffective and that resort to force in the settlement of present-day economic issues is unavoidable.
Are such fears or hopes well founded? What is a revolution? When is it likely to take place, if at all? How large a portion of the public has in times past participated in revolutionary movements? What has been the behavior of the crowd in such crises? What forces, historical, economic and psychological, have transformed social stress and change into deeds of violence? What, in the end, have revolutions accomplished for human advancement? Are we facing a revolution in America at the present time?
—Everett Dean Martin, Farewell to Revolution (1935), p. ix (from the Foreword)