iconoclasm

The belief in, participation in, or sanction of destroying religious icons and other symbols or monuments, usually with religious or political motives.

Finally, “iconoclasm” is a form of desecration and shares its general intention to deny the sacred qualities of an image and to demonstrate that it has no power, to prevent it from being treated as an idol or a rival to God.¹⁴ But not all forms of desecration constitute iconoclasm, though iconoclasm is always a form of desecration.

A challenge to a widely held belief, tradition or cherished institution.