what if the people are realistically unable to revolt successfully, say like when czechs began to break away from communism in 1956? and the soviets sent the tanks in? they didn't ask for the gov't, it was imposed by an outside power, and they can't get away from it.

so i think there are some instances where the gov't may assume powers that are not granted by society, and there are instances where the gov't may not be created by society.