Eikonoklastes (from the Greek εἰκονοκλάστης, "iconoclast") is a book by John Milton, published October 1649. In it he provides a justification for the execution of Charles I, which had taken place on 30 January 1649. The book's title is taken from the Greek, and means "Iconoclast" or "breaker of the icon", and refers to Eikon Basilike, a Royalist propaganda work. The translation of Eikon Basilike is "icon of the King"; it was published immediately after the execution. Milton's book is therefore usually seen as Parliamentarian propaganda, explicitly designed to counter the Royalist arguments.