Iconoclasm:
Iconoclasm (from Greek: εἰκών, eikṓn, ‘figure, icon’ + κλάω, kláō, ‘to break’) is the social belief in the importance of the destruction of icons and other images or monuments, most frequently for religious or political reasons. People who engage in or support iconoclasm are called iconoclasts, a term that has come to be figuratively applied to any individual who challenges “cherished beliefs or venerated institutions on the grounds that they are erroneous or pernicious.” [Wikipedia]
Noted in this display introduction for Icons Of The Late Empire: Story and Art, at The Museum of Russian Art:
My Arts Editor is a fan of icons, especially their covers (for which I cannot find their technical name).