Hundreds of people protested in Washington Friday against Iran, demanding a change in its regime and denouncing its "atrocity toward the people". Protesters waved Iranian flags as they chanted for "regime change now" -- with some holding portraits of Maryam Rajavi, leader of the Peoples Mujahedin, an Iranian opposition group banned in the country, reported AFP. "The regime inside Iran is doing so much atrocity toward the people. Iran whole has been destroyed by this regime," said Michael Passi, an Iranian-American engineer. "There are a lot of executions, a lot of tortures and a lot of export of terrorism by this regime," he alleged. "We want separation of religion and the state," added Mina Entezari, an Arizona-based designer who was a political prisoner in Iran for seven years. "We want freedom for people." The administration of US President Donald Trump consistently blasts a lack of freedoms in Iran and its "destabilizing" influence on the Middle East. A firm adversary of Tehran, he has re-implemented harsh economic sanctions -- but Washington insists it is not pushing for regime change, only a change to Irans policy in areas including missile development and support for militant groups. "Im 100 percent behind President Trumps policy," Passi said. "The only language that this Iranian regime understands is a language of force."