WTC and "moral evil"

the second, more "successful" attack on the World Trade Center in NYC in 2001, is an historical example of "moral (as Lisbon was in 1755 of "natural) evil"
but one which cannot be realistically understood without clear knowledge of the prior decades of American imperial (overt and covert) history which lead up to it.
(though a preponderantly emotional position was, is and will be popular, naturally.)