The 2010 documentary film Inside Job revealed in detail what events and policies had led to the 2008 financial disaster.
It was the greed and deceit on the part of major Wall Street banks, with the help and sometimes ignorance of Federal Reserve and other regulatory agencies that brought the meltdown and caused millions of people to lose their jobs or homes.
Central bank chairman and governers, with all their theories, had very little idea about financial risks in the real world and how some of the riskiest financial instruments worked.
Even some top academicians from universities like Harvard and Columbia were awarded financially by those banks for advocating policies that favored banking industry and supporting banking practices that were immoral or even illegal and criminal.
Not to mention all the politicians in Washington who for financial contributions sided with banks and helped them get what they wanted.
In a nutshell, Wall Street bought, controlled, or influenced the government, the Federal Reserve and elite academicians with billions of dollars, eventually crashed and brought down the wole world with them.
Worse, their best friends, Treasury Department, the Congress, and The Federal Reserve came to the rescue, using hundreds of billion of dollars of taxpayer money to bail them out, making them even bigger and stronger than before and without charging or arresting anybody responsible for the disaster.