Anatomy of Revolution
From the Wikipedia:
"The Anatomy of Revolution is a book by Crane Brinton outlining the "uniformities" of four major political revolutions: the English Revolution of the 1640s, the American, the French, and 1917 Russian Revolution. Brinton notes how the revolutions followed a life-cycle from the Old Order to a moderate regime to a radical regime, to Thermidorian reaction. The book has been called "classic, "famous" and a "watershed in the study of revolution,".
First published in 1938, revised editions of Brinton's book were published in 1952, and 1965, and it is still in print.
Brinton summarizes the revolutionary process as moving from "financial breakdown, [to] organization of the discontented to remedy this breakdown ... revolutionary demands on the part of these organized discontented, demands which if granted would mean the virtual abdication of those governing, attempted use of force by the government, its failure, and the attainment of power by the revolutionists. These revolutionists have hitherto been acting as an organized and nearly unanimous group, but with the attainment of power it is clear that they are not united. The group which dominates these first stages we call the moderates .... power passes by violent ... methods from Right to Left." (p.253) (http://en.wikipedia.org/wiki/The_Anatomy_of_Revolution)