I read your post and olso seen and read before a lot of post and movies like "Zeitgeist" about the 9/11.
I don't know who was to blame even if there are so many speculations I as a citizen from Romania , I can say that I "don't know who is to blame"
But what I do know is the faces of the people after that moment .
And what happened in just a few seconds when their fear became HATE.
They shown this on movies, tv, youtube, and it was scary to see in a moment how fear transformed into pure hate.