Ali was an early Caliph, son in law of Mohammed. I think that rules him out as one of the sociopathic, mohammedean thugs that participated in mass murder.
His death is commemorated on the 21st day of Ramadan. It just so happened that that day happened to fall on the 11th of Sept. this year. In principal commemorating that day is no different than commemorating the martyrdom of any Christian saint.
People, PLEASE, take the three minutes to research things, especially polemic mass emails, before you pass them on. Let us not give the enemy any munitions that can be used against us.