A health worker distributes face masks to security forces as a precaution against the coronavirus while Shiite pilgrims march to Karbala for the Arbaeen ritual in Baghdad, Iraq, Sunday, Oct. 4, 2020. The holiday marks the end of the forty day mourning period after the anniversary of the martyrdom of Imam Hussein, the Prophet Muhammad's grandson in the 7th century. (AP Photo/Khalid Mohammed)