[PeterPrinciple]

The climate change crisis is the worst bout of mass insanity

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Interesting question. I might have gone with tulip investing but that was not world wide.

You may have won but the following are interesting:

https://en.wikipedia.org/wiki/List_of_mass_panic_cases

[devere]

Thanks for the link. After perusing it, I rest my case.

Tulip mania was dramatic, but localized, and not that harmful.