"Dictators, perhaps because they know their own lies so well, have usually realized the power of history. Consequently, they have tried to rewrite, deny, or destroy the past. Robespierre in revolutionary France and Pol Pot in 1970s Cambodia each set out to start society from the beginning again. Robespierre’s new calendar and Pol Pot's Year Zero were designed to erase the past and its suggestions that there were alternative ways of organizing society."