ICONOCLAST
iconoclast
(noun) someone who attacks cherished ideas or traditional institutions
iconoclast, image breaker
(noun) a destroyer of images used in religious worship
Source: WordNet® 3.1
Etymology
Noun
iconoclast (plural iconoclasts)
(historical, Christianity) One who destroys religious images or icons, especially an opponent of the Orthodox Church in the 8th and 9th centuries, or a Puritan during the European Reformation.
Antonym: iconodule
One who opposes orthodoxy and religion; one who adheres to the doctrine of iconoclasm.
(by extension) One who attacks cherished beliefs.
Source: Wiktionary
I*con"o*clast, n. Etym: [Gr. iconoclaste.]
1. A breaker or destroyer of images or idols; a determined enemy of
idol worship.
2. One who exposes or destroys impositions or shams; one who attacks
cherished beliefs; a radical.
Source: Webster’s Unabridged Dictionary 1913 Edition