the crisis took years to emerge. It was caused by reckless lending practices, Wall Street greed, outright fraud, lax government oversight in the George W. Bush years, and deregulation of the financial sector in the Bill Clinton years. The deepest source, going back decades, was rising inequality. In good times and bad, no matter which party held power, the squeezed middle class sank ever further into debt.
In 2018, many of those root causes remain, making another economic downturn or collapse possible.