The document discusses four theories of power: Weber theorized that power is the ability of individuals to achieve their goals; in the 1920s, eugenics aimed to restrict certain groups like the disabled; Dahl's 1950s pluralism theory argued that societies appear pluralist with diverse views, but media ownership by companies like Murdoch's shows the same viewpoints are presented to different classes; Foucault saw power as relying on charisma and authority in both coercive and traditional forms.