The Shiite mourning month of Muharram begins on December 18.
He was killed on the tenth of Muharram (Ashura) in the year 680 on the plain of Karbala, in what is now Iraq.
The Revolutionary Guard and the basij are determined to make sure that Muharram and Ashura will not provide that opportunity.
They are careful to say their prayers, to observe Muharram as a season of mourning and to go on pilgrimage to Mecca and Kerbala.
This is an orthodox blow at the Sha'h practices in the month of Muharram.
The Muharram celebration takes its name from the first month of the Muhammadan year, during which it takes place.
But with the beginning of Muharram the latent religious excitement of the East broke loose.
Some very pious Sha'hs celebrate the fortieth day after the first of Muharram.
They also paint the bodies of the men who pretend to be tigers at the Muharram festival, for which they charge a rupee.
The Sunns do not, except as spectators, take any part in the Muharram ceremonies.