FRONTLINE investigates how the central bank's actions have played out over the years on Wall Street versus Main Street - in a gripping new documentary. This film traces how an experiment the Fed began after the 2008 crash has been dramatically changing the American economy - exploring criticisms that, while well-intentioned, the Fed's efforts have contributed to wealth inequality, helped today's financial world grow far removed from the real-world economy, and prompted fears of growing inflation and an impending crash.