People wearing masks of Syrian President Bashar al-Assad (L), Iran's President Mahmoud Ahmadinejad (2nd L and 2nd R) and Iran's Supreme Leader Ayatollah Ali Khamenei protest outside the U.N. headquarters in New York September 22, 2011. Thousands of supporters of the main Iranian opposition, the Mujahedin-e Khalq, protested against Ahmadinejad's visit to the U.N. REUTERS/Eduardo Munoz (UNITED STATES - Tags: POLITICS)