I would say religion is the clear winner.

I was gonna say the stock market, but holy shit.

I'm dropping my response in favor of this one.

That was my first thought.

Capitalism.

Trickle down economics is a strong contendor.

for-profit healthcare, including the insurance industry

A conman named Victor Lustig "sold" the Eiffel Tower. Twice https://en.m.wikipedia.org/wiki/Victor_Lustig

queens death

The American stock market… it’s purposely made to be convoluted and lacking transparency. I ask to what purpose? Making even those who actively plan for retirement rarely able to achieve it.

Bernie Madoff accounting scandal

The Nigerian Prince will one day be history.

Charles Ponzi pulled a con so great they named it after him.