Since September 2002, in the United States the 11th of September is officially proclaimed the Patriot Day. It is observed as the National Day of Service and Remembrance in memory of the 2,977 killed in the 2001 September 11 attacks.
The American Library's Book display "Patriot Day" offers for your consideration the books on this topic, where the authors are trying to find answers to the painful questions this tragedy posed to the world.