Rigger, if the terrs who blew up the WTC and Pentagon were united by the fact that they all like apple pie, they blew the buildings in furtherance of apple pie and because Americans are "anti-apple pie," and the people who harbor these terrs also like apple pie and give the terrs shelter because they are all united by apple pie, then what's wrong with blasting all these damn pie-eaters?
There must be a cost exacted upon "innocents" because they should not have given aid and comfort to the terrs. They are not innocent after all, they are co-conspirators. Not all of them, but enough of them. The others that are killed, the "truly innocent" if you will, that may be unfortunate but it is unavoidable. We cannot conduct a war bound by more restrictive rules than the enemy.