Plural form; multiple people who engage in brainwashing or systematic manipulation of others' beliefs and thoughts.
Regular English pluralization of 'brainwasher' using the '-s' suffix, maintaining the agent noun structure while referring to multiple individuals performing the action.
The concept of 'brainwashers' became central to Cold War propaganda and conspiracy theories, but modern psychology shows that most attempts at belief-change fail unless people are already somewhat sympathetic to the ideas.
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