Given the recent election crisis and continuing protests in Iran and in light of the 30th anniversary of the Islamic Revolution, the Platypus Affiliated Society on November 5, 2009 hosted a panel discussion at the University of Chicago titled "30 Years of the Islamic Revolution: The Tragedy of the Left." Panel participants included Danny Postel, journalist and author of Reading Legitimation Crisis in Tehran: Iran and the Future of Liberalism; Kaveh Ehsani, editor of The Middle East Report (MERIP); Maziar Behrooz, historian and author of Rebels with a Cause: The Failure of the Left in Iran; and Chris Cutrone of Platypus. This supplement to issue #20 of the Platypus Review consists of an edited transcript of the discussion, beginning with the panelists' prepared remarks, followed by their responses to each other, and ending with a series of audience questions and answers.