iconoclasm

 
Pronunciation: /ʌɪˈkɒnəklaz(ə)m/

noun

[mass noun]
  • 1the action of attacking or assertively rejecting cherished beliefs and institutions or established values and practices.
  • 2the rejection or destruction of religious images as heretical; the doctrine of iconoclasts.

Origin:

late 18th century: from iconoclast, on the pattern of pairs such as enthusiast, enthusiasm