The events of January 6, 2021 gave new currency to the idea of brainwashing. Some claimed that Trump's followers had been brainwashed, while others insisted that a 'deep state' had brainwashed most Americans into accepting a rigged election. Scholars who explain that brainwashing theories have long been rejected by most academics and courts of law find it difficult to be heard.

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https://www.cambridge.org/core/elements/abs/brainwashing/8CA01B4526F6B4F28AC40EF93FCEF1BB