Iranians walk next to an Anti-Trump and Netanyahu banner during the Arbaeen Day ceremony, Tehran, Iran, August 4, 2026. On Tuesday, more than 20 million pilgrims from the Shiite branch of Islam, the majority sect in Iraq and Iran, are commemorating Arbaeen, a celebration held in the Iraqi city of Karbala. So far, authorities have announced that more than 4.8 million visitors have entered Iraq for the pilgrimage and that arrivals continue from several countries, especially Iran. 📍Imam Husayn shrine in Karbala, Iraq, on the day of Arbaeen, the largest annual public gathering on earth. During the Arbaeen pilgrimage, worshippers stage reenactments of the battle in which Imam Hussein died in Karbala, where his mausoleum is located.