Who's posting this toxic Anti-American Anti-Westerner crap?

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Watch out for flaky posts that do not make you smarter, better, or happier.

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Watch out for extremists or mercenaries on Facebook that are just trying to create animosity and discontentment in America.

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ad nauseam:  referring to something that has been done or repeated so often that it has become annoying or tiresome.  ~ Oxford Languages.