American history includes some awful massacres, the kind of events people want to forget.  But should history forget ‘em, too?  Russell Contreras, Albuquerque-based reporter for the Associated Press (AP,) specializes in uncovering hidden history, like the story of the first and only massacre recognized in an official US Historical site.  A town next door to the massacre site might like to forget it’s named for the perpetrator of the war crime.  The story of the Sand Creek Massacre.