tribal society

His documentaries like 'Aguirre, the Wrath of God' and 'Fitzcarraldo' obsessively explore the collision between modern ambition and indigenous Amazonian societies.

While famous for westerns, Leone's work mythologizes tribal-like honor codes and ritualistic violence in 'Once Upon a Time in the West' and his other epics.

His films like 'The Revenant' and 'Birdman' examine primal human instincts and tribal hierarchies within both natural and urban civilizations.