First of all, the perpetrators were extremists. They do rash things like hijack planes from time to time but are not indicative of the general mid east populace. The US has been angering people in the mideast since the end of WWII. Afghanistan really became a haven for terrorism after the USSR tried to invade. The US went in and made some questionable allies (such as Osama bin Laden) who were going to fight the soviets. The US made promises to Afghanistan which they never made good on once the Soviets were out of the picture. As a result, Afghanistan was left a barren war torn land and their people suffered greatly. This is an act they refer to as “The Great Betrayal”. In addition, the US unilaterally supports Israel which has established itself as an enemy of just about every other nation in the region. The US donates billions of dollars yearly and provides them with arms which they use to be aggressive toward their neighboring countries. There are several other reasons that extremists in the region hate America.