A bust of Aztec emperor Cuauhtemoc is backdropped by an image of the Pre-columbian god Quetzalcoatl adorning the surrounding buildings, at Mexico City's main square the Zocalo, Monday, Aug. 9, 2021. Mexico City is preparing for the 500th anniversary of the fall of the Aztec capital of Tenochtitlan, today's Mexico City, on Aug. 13, 2021. (AP Photo/Eduardo Verdugo)