In the Bronze Age, the most significant episode of iconoclasm occurred in Egypt during the Amarna Period, when Akhenaten, based in his new capital of Akhetaten, instituted a significant shift in Egyptian artistic styles alongside a campaign of intolerance towards the traditional gods and a new emphasis on a state monolatristic tradition focused on the god Aten, the Sun disk— many temples and monuments were destroyed as a result:
“In rebellion against the old religion and the powerful priests of Amun, Akhenaten ordered the eradication of all of Egypt’s traditional gods. He sent royal officials to chisel out and destroy every reference to Amun and the names of other deities on tombs, temple walls, and cartouches to instill in the people that the Aten was the one true god.”
Public references to Akhenaten were destroyed soon after his death.
Source: Iconoclasm – Wikipedia