The Green Movement refers to a series of actions after the 2009 Iranian presidential election, in which protesters demanded the removal of Mahmoud Ahmadinejad from office. Green was initially used as the symbol of Mir Hossein Mousavi's campaign, but after the election it became the symbol of unity and hope for those asking for annulment of what they regarded as a fraudulent election. Mir Hossein Mousavi and Mehdi Karroubi are recognized as political leaders of the Green Movement.Hossein-Ali Montazeri was also mentioned as spiritual leader of the movement. Witnesses to Green Movement protests often claim that protests of this size have not been seen in Iran since the 1979 revolution.