Shiite Muslim pilgrims march with flags en route to Karbala from Iraq's southern province of al-Muthanna on September 6, 2022, ahead of the holiday of Arbaeen. - Each year, pilgrims converge in large numbers to the holy Iraqi cities of Najaf and Karbala ahead of Arbaeen, which marks the 40th day after Ashura, commemorating the seventh century killing of Prophet Mohammed's grandson Imam Hussein. (Photo by Asaad NIAZI / AFP)
