Ayatollah Ahmad Khatami and Ayatollah Abbas Ka'bi, members of the Assembly of Experts, were also present at the event.
The protestors voiced out abhorrence of the Thursday disaster in Mina, Saudi Arabia, that left almost 2,000 pilgrims dead and 2,000 injured.
The gathering also called for punishment for those who are responsible for that tragic incident.
Due to the stampede in Mina during the Hajj rituals on Thursday 2,000 Muslim pilgrims were killed and over 2,000 wounded.
The pilgrims were on way to jamarāt to perform Hajj rituals there. The Stoning of the Devil is part of the annual Islamic Hajj pilgrimage to the holy city of Mecca.
Muslim pilgrims fling pebbles at three walls (formerly pillars), called jamarāt, in the city of Mina just east of Mecca.
It is one of a series of ritual acts that must be performed in the Hajj.
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