Iranian demonstrators burn British and United States flags during a demonstration against Israel's occupation of Palestine on the occasion of Jerusalem Day (Quds Day) in Tehran, Iran on Sept 18, 2009. Most Islamic states mark the annual event, which happens on the last Friday of the holy month of Ramadan. Jerusalem Day (Quds Day) was launched by the founder of the Islamic republic of Iran, Ayatollah Khomeini, in the early of 1980s. UPI/Maryam Rahmanian