Maryam Rajavi, the President-elect of the National Council of Resistance of Iran (NCRI), said Monday that tearing the posters of Ali Khamenei show that the Iranian people want to topple the " regime of terror."
On Twitter, she wrote that the protesters whose blood has been shed by the Iranian Revolutionary Guard Corps (IRGC) are martyrs of freedom.
She saluted the protesters who had helped spark the uprising that erupted across Iran.
Anti-government protesters demonstrated in Iran for the fourth day running in defiance of a warning by authorities of a crackdown, constituting one of the most audacious challenges to the clerical leadership since pro-reform unrest in 2009.
Since Thursday night Iranians have been staging protests to express their anger at the country's failed domestic and foreign policies which has brought about poverty, inflation, unemployment and corruption.
Several Iranians were shot during protests late Saturday, sources said, after Iran's government warned citizens against holding "illegal" public gatherings.