Emperor Tomato Ketchup (1971)

In an indeterminate future, children have overthrown adults and established their own empire. They engage in cruel and abusive acts against the adults under their dominion. These include scenes of child soldiers arresting, enslaving, executing, and raping helpless victims, often held at gunpoint. A constitution is read aloud, establishing the basic laws of the Empire and the supremacy of children over adults. The boy emperor lazily lords over his parents and shows disinterest in the young girl who is his designated concubine.