Demonstrations for the economic crisis and against the religious leader Ali Khamenei are expanding in major cities of Iran.
The bloody protests are gaining momentum despite authorities shutting down the internet to make repression easier.
Reza Pahlavi, the son of Iran's ousted shah, who lives in the United States, welcomed what he described as a "magnificent" turnout and urged Iranians to hold more targeted protests.
The goal, he said in a video message, is to control the cities, announcing at the same time a return to his homeland.
So far, more than fifty deaths have been reported in the protests.
Iran's Nobel Peace Prize laureate Shirin Ebadi has warned that security forces are preparing to commit a massacre under the guise of sweeping telecommunications disruptions.
Khamenei, at the same time, accused Washington of inciting the unrest.
KT/NP
