ambonoclast

Etymology
From (ambonos), genitive form of  (ambos) "rim, edge", and  (klastos) "broken". Hence, literally, "one who wishes to tear down screens", in reference to the rood screens that separated the chancel (where priests were) from the nave (where the congregation was) in a medieval church.

Noun

 * 1)  One who wishes to excessively modernize churches, particularly by removing traditional screens.