When should we remember difficult and divisive histories?  After a career of covering conflicts around the globe, writer and political analyst David Reiff offers his thoughts on the question. In Praise of Forgetting: Historical Memory and its Ironies, Rieff posits that in some cases there is a consensus around the need to remember past crimes.  More often, however, there is no agreement.  The only way out of messy conflicts is to agree to forgive and forget.  Find out more about possibilities and perils of memory on the July 1st episode of Realms of Memory.