An Iraqi Shi'ite boy looks on as Iraq Shi'ite Muslims gash their foreheads with swords and beat themselves while commemorating Ashura in Baghdad, October 24, 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 Ahmed Saad/Reuters)





An Iraqi Shi'ite boy looks on as Iraq Shi'ite Muslims gash their foreheads with swords and beat themselves while commemorating Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves while commemorating Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





A Shi'ite Muslim man prepares to gash a boy's head with a knife to commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves as they commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Shi'ite men prepare to gash their heads with blades as they commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves as they commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves while commemorating Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





An Iraq Shi'ite Muslim boy bleeds as he gashes his forehead with a sword while commemorating Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves while commemorating Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves during commemoration Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Shi'ite men prepare to gash their heads with blades as they commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





An Iraqi Shi'ite boy poses for a photograph as Iraq Shi'ite Muslims commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves to commemorate Ashura in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Shi'ite women cry as they watch a re-enactment of the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Local actors dressed as ancient warriors re-enact a scene from the 7th century battle of Kerbala during commemoration in Sadr City, Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)





Iraq Shi'ite Muslim men bleed as they gash their foreheads with swords and beat themselves as they commemorate Ashura in Baghdad, October 24, 2015. (Photo by Ahmed Saad/Reuters)