According to this news article, Christians are under attack just because they are Christian. Hrm... funny thing - again, it is NOT Atheists who are attacking them. Instead the Christians are being attacked by Mohammedans.
Christians like to say that they are being attacked, even when they aren't, such as when Atheists bring up the fact that there is zero proof for their god.
While these events are tragic, if both sides where Atheist, what would they have to fight about? So far I am unaware of a single Atheist-driven war, a single Atheist-driven murder, when millions of people have been killed because some prophet or preacher said that his invisible, unknowing god(s) told him this was the right thing to do, regardless of what the society as a whole says is the right thing to do.