sentences:  Hata has supported the work of the Japanese Society for History Textbook Reform, despite noting that the textbook which the Society had authored "was colored more strongly by nationalism than others".In 2007 Hata was vocal in his denunciation of an essay written by Toshio Tamogami, a former general in the Japanese Air Self-Defense Force, which sought to justify Japanese imperialism.Hata found Tamogami's essay to be "of extremely low quality" and full of "old conspiracy theories".