La Vague by Morton Rhue

A high-school history teacher launches an experiment to demonstrate how easily people can be swept up by discipline and the promise of belonging; what begins as a controlled classroom exercise soon becomes a popular, exclusionary movement that enforces rituals, suppresses dissent and normalizes intimidation, forcing the teacher and students to confront the experiment’s disturbing resemblance to totalitarian mass behavior and to find a way to stop it.

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