Although this matter has certainly been debated many times before, I wanted to revisit it in light of the current state of canon. A brief IU definition of a dictatorship is infamously given in AOTC, when Anakin "jokes" that someone wise should force the senators to resolve their differences. Also, Star Wars: The Visual Encyclopedia says that the Empire is a dictatorship because "ultimate power [rests] in the hands of the Emperor." Now, I know that the Alliance's aim is to restore democracy eventually--that's in their name, right? Nevertheless, the Rebels are not just a military movement, they also have a civil governement, and, to my knowledge, said government was never elected (directly or indirectly) by its citizens. Mon Mothma may have been right to think Chancellor Palpatine would become a dictator, but technically she's one herself, right? She has no hereditary right and was not voted into office. Now, is she restricted by laws, a constution or something? If yes, to what extent exactly? Let's make it clear that I'm not even considering moral implications here. I'm not trying to determine whether the Alliance's power structure is "right" or "wrong." What I'm trying to do is determine whether the Alliance is a dictature from a technical point of view.