In China, Vietnam, Cuba and Korea, revolutions brought the workers and peasants to power. We're looking forward to others. And of course we are all descendants in a political sense of the great October socialist revolution. All the others are modeled on it to one extent or another, even though with great variations. In all revolutions the problem rotates most often about leadership.
Leadership is always representative of a class.
It is not suspended in midair. In the revolutions of the 19th century, it represented either the propertied classes or the dispossessed. Even if the ruling class has been overthrown, even if a counterrevolution seems impossible, leadership is still of the essence. Revolutions have either succeeded or defaulted for lack of leadership, provided of course that the economic and political conditions have matured. In Russia and China you had a revolutionary leadership dedicated to Marxism.