And finally, some members of the nation's elite families may directly participate in a revolution by providing leadership or other resources to help transform popular discontent and uprisings into an organized and purposeful revolutionary movement, In this capacity, elites usually play a role in formulating an ideology for the revolutionary movement: an indictment and criticism of the existing power structure, a set of justifications for the necessity of resorting to a revolutionary movement to bring about social change, and a long-range plan and strategy of action(Greene 1990).