Twin towers was a massive tradegy and a waste of human life on a large scale.

Not as large though as the number of people who die everyday from the fact they are denied drugs in africa because the (mainly american) companies holding the rights to make those drugs wont allow them a license to make them.
Its a real shame when profit for share holders is worth more than millions of lives, and i can see why some people are angered at capatilist lifestyles like they ascociate with the US.