Not teaching about 9/11 is an insult to many: the police and firefighters that ran into the burning towers and never made it out; the civilians from MANY States and countries who didn't make it out of the towers or were on those airplanes; the soldiers, sailors and Marines who tried to bring AQ to justice; all the people who were part of the rebuilding and healing process. My opinions about the negative aspects of the aftermath are best left for the Dog House.