On January 30th, 2007, Platypus hosted its first public forum, “Imperialism: What is it—Why should we be Against it?” The panel consisted of Adam Turl of the International Socialist Organization (ISO), Kevin Anderson of the Marxist-Humanist group News and Letters, Nick Kreitman of the new Students for a Democratic Society (SDS), Danny Postel of Open Democracy, and Chris Cutrone of Platypus. What follows is an edited transcript of this event. The question of imperialism remains obscure on the Left. In light of the continued failure of the anti-war movement to end the U.S. presence in Iraq and Afghanistan, along with the decline of anti-war protest in the wake of Barack Obama’s election, it seems that the critique of imperialism has not been clarified, but only become more impotent in its opacity. Consequently, the Platypus Review believes that this panel retains its salience.