Iconoclasm, Greek for "image-breaking", is the deliberate destruction within a culture of the culture's own religious icons and other symbols or monuments, usually for religious or political motives. There were two periods inconoclasm in the Byzantine Empire's history. The first came under the reign of Leo III the Isaurian in 730. It was continued under his son, Constantine V, who reigned from 741-775. It wasn't until 780 that the first period ended. The second period lasted from 814-842.