Iranians in their millions took part in massive procession ceremonies across country, marking the anniversary of the martyrdom of Shiite Islam's most beloved leaders.
Mourners took to the streets or gathered in mosques to grieve the slaying of Imam Hussein (AS), his family and his companions.
Dressed in black, mourners beat their chests with bare hands in order to show their grief over the death of their dear Imam and the grandson of prophet Muhammad (PBUH).
Tasou'a and Ashoura mark the climax of the Remembrance of Muharram, marking the death of Imam Hussein (AS) in the Battle of Karbala, Iraq, in 680 A.D.
