When we eliminate the feeling of "us vs them", believer vs non-believer, west vs east, I believe most kind of nation wide violence disappear. The easiest way to do so is to allow music, video and communities to be shared.
I think we can be rather sure that few if any of the religious lunatics that participated in the attack was part of the EVE community. Had one been in it, its likely he would had thought "Wait I know who works in that building, he is good person. lets go somewhere else.".