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Mass hysteria is a very real phenomenon with very hard to identify causes. Whether an entire town can't stop dancing or people suddenly start worrying about minor marks on their windshields, these seemingly unbelievable events have had some surprising (and sometimes devastating) effects.

In this episode of The List Show, Erin McCarthy (@erincmccarthy) takes us through seven incidents of mass hysteria throughout history.

The Atlantic's fascinating story on the mystery seeds: https://www.theatlantic.com/science/archive/2021/07/unsolicited-seeds-china-brushing/619417/

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7 Incredible Mass Hysteria Events | Mental Floss
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