The bubonic plague.

Speaking of which the Maoist Cultural Revolution went for a decade, and the Khmer Rouge death flag lasted for 4 years. And for the latter, the elite had done with Cambodia so thoroughly with their agents of destruction that there's nothing left in that country anymore -- think of Genghis Khan sacking Baghadad but the killers didn't even brute force.

This is very related because covid world is NOT a pharma related scam, it's just wrapped up like one and in reality it is that type of communist revolution death flag with the intent to leave complete ruin in its wake.