A protester wearing a mask depicting former Libyan leader Muammar Gaddafi with a mock nuclear bomb stands outside the U.N. headquarters in New York September 22, 2011. Thousands of supporters of the main Iranian opposition, the Mujahedin-e Khalq, gathered outside the U.N. headquarters to protest against Iranian President Mahmoud Ahmadinejad's visit to the U.N. REUTERS/Eduardo Munoz (UNITED STATES - Tags: POLITICS DISASTER SOCIETY CIVIL UNREST)