The Religion of Peace (r)

 Muslims celebrate the holiest day of the year by blowing up other muslims:

 "KABUL — A suicide bombing on Tuesday targeting Shiite worshipers during their holiest day of the year left dozens of people dead in Kabul and threatened to stoke ethnic tensions that could markedly complicate the Afghan conflict as the West charts an exit plan.
The bombing and a second attack on Shiite worshipers in northern Afghanistan left at least 58 people dead, making Tuesday one of the deadliest days for civilians in the 10-year war. They appeared to be the first major attacks to target Shiites of the Hazara ethnic minority group since the fall of the Taliban in 2001. Hazaras were brutally persecuted during five years of Taliban rule, making them wary of any peace deal with the Taliban."