“It is already on the wane, eclipsed by the enlarging orb of reason, and the luminous revolutions of America and France.”

The Ballot or the Bullet (1964), Speech in Detroit, Michigan (12 April 1964)
Context: A revolution is bloody, but America is in a unique position. She’s the only country in history in a position actually to become involved in a bloodless revolution. The Russian revolution was bloody, Chinese revolution was bloody, French revolution was bloody, Cuban revolution was bloody, and there was nothing more bloody then the American Revolution. But today this country can become involved in a revolution that won’t take bloodshed. All she’s got to do is give the black man in this country everything that’s due him, everything. I hope that the white man can see this, ‘cause if he don’t see it, you’re finished. If you don’t see it you’re going to become involved in some action in which you don’t have a chance. And we don’t care anything about your atomic bomb; it’s useless because other countries have atomic bombs. When two or three different countries have atomic bombs, nobody can use them, so it means that the white man today is without a weapon. If you want some action, you gotta come on down to Earth. And there’s more black people on Earth than there are white people on Earth. The white man can never win another war on the ground. His days of war, victory, his reign, his days of ground victory are over.

From 1980s onwards, Grunch of Giants (1983)
Context: I have been a deliberate half-century-fused inciter of a cool-headed, natural, gestation-rate-paced revolution, armed with physically demonstrable livingry levers with which altogether to elevate all humanity to realization of an inherently sustainable, satisfactory-to-all, ever higher standard of living. Critical threshold-crossing of the inevitable revolution is already underway.

2010s, Our revolution's doing what Saleh can't – uniting Yemen (2011)

Speech to the National Convention, 10th April 1793
Misc Quotes

"Beware fellow plutocrats, the pitchforks are coming" TED (conference) August 2014 http://www.ted.com/talks/nick_hanauer_beware_fellow_plutocrats_the_pitchforks_are_coming/transcript?language=en

Source: Les Miserables

Without Marx or Jesus; the new American Revolution has begun (1971) quoted in The Aquarian Conspiracy, by Marilyn Ferguson, Chapter 5 (1980)
1970s

Source: "Entrepreneurship: Productive, unproductive, and destructive," 1996, p. 5

On conclusion of case Reno v. American Civil Liberties Union — cited in [Goldsmith, Jack L., Tim Wu, 2006, Who Controls the Internet?: Illusions of a Borderless World, Oxford University Press, 22, 0195152662]