[NeoCaveman]

Hope this helps:

Iconoclasm (7th and 8th Centuries)

This heresy arose when a group of people known as iconoclasts (literally, "icon smashers") appeared, who claimed that it was sinful to make pictures and statues of Christ and the saints, despite the fact that in the Bible, God had commanded the making of religious statues (Ex. 25:18–20; 1 Chr. 28:18–19), including symbolic representations of Christ (cf. Num. 21:8–9 with John 3:14).

[MarMema]

In the Orthodox church, each year, we celebrate the victory against the iconoclasts on our annual Sunday of Orthodoxy.
We join together here with some 14 other Orthodox churches and we all display our icons. Just happened a few weeks ago, in fact.