The events of the last week on Wall Street represent a new and more destabilizing phase of the turmoil gripping financial institutions and markets in the U.S. A financial crisis has been unfolding for more than a year. It is now the most serious financial crisis of U.S. capitalism since the Great Depression of the 1930s. And it is by no means contained or under control. The financial edifice of U.S. imperialism is in danger of crumbling. And the U.S. ruling class is cobbling together desperate measures to prevent wholesale collapse. ...