Also a term of abuse used by Captain Haddock by VaccaD

Question 11

In its original religious sense, WHAT TERM describes figures as diverse as the Egyptian emperor Akhenaten, Protestant leader Ulrich Zwingli, and the Islamic State of Iraq and the Levant, but is most often associated with the Byzantine Empire in the 8th and 9th centuries? It's now much more often used to mean anyone who makes aggressive statements or actions against any well-established status quo.