The Eastern part of the old united Roman Empire was ripped apart by the Iconoclast Heresy in the 700's and early 800's. Dr. John Rao discusses the nature of that heresy and the growth in depth of the orthodox response to it from its height in the 750's until its final defeat in the 840's. Taken from the Roman Forum Gardone Symposium 2007 - Christianity and the Carolinigians (751-896).