All we know that people inside WTC knew the plan of Bin Laden days before the attack (transactions and other evidences inside the towers show it). People of WTC, workers of NY, commited treason. Now, reports say that Bagdad UN Headquarters workers gave info about the building and other data in order to the attack was more effective. They killed many people, people they worked with.
I wonder where is humanity, loyalty, friendship, nowadays...