This short video explains four reasons behind the Occupy movement.

For reference, The
Glass-Steagall Act was established in 1933 by Congress and repealed in 1999. The Glass-Steagall Act  (introduced and sponsored by Democrats) was enacted during the Great Depression to avoid a similar crisis in the future. The act prohibited commercial banks from collaborating with full-service brokerage firms or participating in investment banking activities. It protected bank depositors from the additional risks associated with security transactions. The act was dismantled in 1999. Consequently, the distinction between commercial banks and brokerage firms has blurred. Today, many banks own brokerage firms and provide investment services.

The repeal of provisions of the Glass–Steagall Act of 1933, by the Gramm-Leach-Biley Act (introduced and sponsored by Republicans), effectively removed the separation that previously existed between investment banking which issued securities and commerical banks which accepted deposits. The deregulation also removed conflict of interest prohibitions between investment bankers serving as officers of commercial banks. Some economists believe this repeal directly contributed to the severity of the Financial crisis of 2007-2011 by allowing Wall Street investment banking firms to gamble with their depositors' money that was held in commercial banks owned or created by the investment firms.

The woman speaking in this video is Senatorial candidate Elizabeth Warren; she is running against Massachusetts Senator Scott Brown.