Afghan Shi'ite Muslims flagellate themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. Ashura, the biggest event of the Shi'ite Muslim calendar, commemorates the death of Imam Hussein, grandson of the Prophet Mohammad, in the 7th century. (Photo by Omar Sobhani/Reuters)





Afghan Shi'ite Muslims flagellate themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. (Photo by Omar Sobhani/Reuters)





An Afghan Shi'ite Muslim cleans blood from his friend's back in a bathhouse after they flagellated themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. (Photo by Omar Sobhani/Reuters)





Afghan Shi'ite Muslims flagellate themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. (Photo by Omar Sobhani/Reuters)





Afghan Shi'ite Muslims flagellate themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. (Photo by Mohammad Ismail/Reuters)





Afghan Shi'ite Muslims flagellate themselves with chains during an Ashura procession in Kabul, Afghanistan October 21, 2015. (Photo by Mohammad Ismail/Reuters)





Shi'ite Muslims walk on hot coals at a ceremony during the Ashura festival at a mosque in central Yangon October 21, 2015. (Photo by Soe Zeya Tun/Reuters)





A Shi'ite Muslim walks on hot coals at a ceremony during the Ashura festival at a mosque in central Yangon October 21, 2015. Ashura is the most important day in the Shi'ite calendar, which commemorates the death of Imam Hussein, grandson of the Prophet Mohammad, in the 7th century battle of Kerbala. (Photo by Soe Zeya Tun/Reuters)





A Myanmar Shiite Muslim devotee runs barefoot over a bed of burning coals as he takes part in a Muharram procession ahead of the Islamic holiday Ashura, in Yangon, Myanmar, October 22, 2015. Muslims across the world are observing Moharram, the first month of Islamic calender, the climax of Moharram is the Ashura festival commemorating the martyrdom of Imam Hussein, a grandson of the Prophet Mohammed in the Iraqi city of Karbala in the seventh century. (Lynn Bo Bo/EPA)





A Shi'ite Muslim walks on hot coals at a ceremony during the Ashura festival at a mosque in central Yangon October 21, 2015. (Photo by Soe Zeya Tun/Reuters)





Shi'ite Muslim women stand as Shi'ite men walk on hot coals at a ceremony during the Ashura festival at a mosque in central Yangon October 21, 2015. (Photo by Soe Zeya Tun/Reuters)





Shi'ite Muslims gash their heads with blades as they commemorate Ashura in Najaf, Iraq October 21, 2015. (Photo by Alaa Al-Marjani/Reuters)





Kashmiri Shi'ite Muslim mourners shout slogans as they are stopped by Indian police during a Muharram procession ahead of Ashura in Srinagar October 22, 2015. Indian police in parts of Srinagar city on Thursday imposed restrictions by sealing off many residential areas to prevent Muharram processions, local media reported. Ashura, which falls on the 10th day of the Islamic month of Muharram, commemorates the death of Imam Hussein, grandson of Prophet Mohammad, who was killed in the 7th century battle of Kerbala. (Photo by Danish Ismail/Reuters)





A Pakistani Shi'ite Muslim shouts religious slogans while walking on hot coals during an early morning religious gathering ahead of the Ashura festival in Lahore, Pakistan October 22, 2015. Ashura, which falls on the 10th day of the Islamic month of Muharram, commemorates the death of Imam Hussein, grandson of Prophet Mohammad, who was killed in the 7th century battle of Kerbala. (Photo by Mohsin Raza/Reuters)





Kashmiri Shi'ite Muslim mourners shout slogans as they scuffle with Indian police during a Muharram procession ahead of Ashura in Srinagar October 22, 2015. (Photo by Danish Ismail/Reuters)





Kashmiri Shi'ite Muslim mourners shout slogans as they are stopped by Indian police during a Muharram procession ahead of Ashura in Srinagar October 22, 2015. (Photo by Danish Ismail/Reuters)





An Indian police officer wields his baton against Kashmiri Shi'ite Muslim mourners during a Muharram procession ahead of Ashura in Srinagar October 22, 2015. (Photo by Danish Ismail/Reuters)





Men sharpen blades to be used for self-flagellation rituals during Ashura, at a shop ahead of Ashura in Lahore, Pakistan, October 22, 2015. (Photo by Mohsin Raza/Reuters)





Shiite Muslim men beat themselves with knives attached to chains during a procession to mark Ashoura at Jafaria worshipping place in Kabul, Afghanistan, Wednesday, October 21, 2015. Ashoura is a Shiite Muslim commemoration marking the death of Hussein, the Prophet Muhammad's grandson, at the Battle of Karbala in present-day Iraq. (Photo by Massoud Hossaini/AP Photo)





A Shi'ite Muslim woman touches an image depicting Imam Hussein during the commemoration of Ashura in Kerbala, October 22, 2015. Ashura, which falls on the 10th day of the Islamic month of Muharram, commemorates the death of Imam Hussein, grandson of Prophet Mohammad, who was killed in the seventh century battle of Kerbala. (Photo by Alaa Al-Marjani/Reuters)