From the Greek for "image breaking", it was opposition to the use of Christian religious images in churches
[DOC] [TLE] Icons and Iconoclasm in Byzantium | Essay | Heilbrunn Timeline of ... [PAR] Old Testament prohibitions against worshipping graven images (Exodus 20:4) ... 
Icons (from the Greek eikones) are sacred images representing the saints, Christ, 
and the ... Iconoclasm literally means image breaking and refers to a recurring 
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