That sort of thinking gives them somewhat of an excuse, and does disservice to those with true mental problems. No my friend, they are just plain evil. Every evil act they do, everything they say is calculated with a predetermined end game which is always for them and only them.
They are not truely upset about what happened on 9/11 or the effects on those affected or by the country. Only how they can take advantage of the sorrow experienced by others while not having to actually do anything to help that requires effort or patriotism.
They are just evil, nothing less.