What are some of the biggest scams to have occurred in history?

Global Cooling/Global Warming/Climate Change --> The scam is that if rich, industrialized nations keep giving their govts. money, they can "stop" the planet's natural forces and ecosystems from being destroyed (never mind what kind of pollution 3rd world nations are doing) and that the world will get back to whatever definition of "normal" the world govts. say is normal.

Marriage "Equality"

CRT/1619 Project/BLM

Covid-19 Pandemic

The United Nations

The bullshit wokeness the left has been pushing the past few years.

Religious tithes. Give them money and your soul is saved!

religion

Fyre Festival. Not quite the biggest scam but one of the funniest train wrecks I've ever witnessed.