Shiite Pilgrims March To Shrine Of Imam Hossein For Arbaeen Commemoration

KARBALA, IRAQ - NOVEMBER 7: Iraqi Shiite militias, called the "hashd al-Shaabi," set up a tribute to their martyrs in fighting the Islamic State (ISIS) since 2014, for viewing by Shiite pilgrims as they near the shrine of Imam Hossein to commemorate arbaeen, the fortieth day after the anniversary of the 680AD death of the revered Shiite saint known as "Lord of the Martyrs," on November 7, 2017 in Karbala, Iraq. Perhaps the largest annual religious event in the world, the weeklong march attracts an estimated 6 - 7 million Shiites from Iraq, Iran, Afghanistan and elsewhere, and has in the past been targeted by ISIS and other Sunni militants. (Photo by Scott Peterson/Getty Images)