Power structure

A Power Structure is a social organization (especially those with a hierarchy) in which control of the actions of the group's members is not evenly distributed; in other words, some members of the group have more control (i.e. power) than others.

Examples of power structures include: governments, businesses, churches. Even in the most egalitarian organizations there will usually be some form of power structure as it is both a natural human tendency and a reasonable solution to the complex problem of making decisions in a group.