Teaching history ensures that events of the past are not forgotten, and lessons are learned  "Organized forgetting" of the past does not lead to harmony: those who allege historic wrongs are unlikely to forget them and will be aggrieved at attempts to deny the significance of the events concerned. This is seen in the Chinese outcry at Japanese attempts to forget the Rape of Nanking; the international attention drawn to the issue led to attempts within Japan itself to re-introduce the event into history textbooks1. By 1997, all Japanese textbooks included the event, signalling a shift towards a closer relationship with China, their long-term rivals1. Friendship often results from shared recognition of past wrongs, and a resolve not to repeat past injustices and mistakes; studying the past is essential for this. History teaching in schools is especially important when tensions are present: those who set and teach the curriculum can and should strive to be impartial, to counter one-sided historical narratives to which pupils may be exposed by their families and the media.  1 Chapel, Joseph. "Denying Genocide: The Evolution of the Denial of the Holocaust and the Nanking Massacre." University of California: Santa Barbara. May 2004. (accessed July 14, 2011).