If you are "Pro mosque", how should those that are deeply offended react?

No idiot in their right mind would blame all religions for 9/11, atheist or not. They might blame the concept of religion or at the very least one religion, but certainly not ALL individual religions. Perhaps you could point me out to the one guy who blames Buddhism for 9/11.

We'll determine if he's an atheist later.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.