How often do you see atheists strap themselves to a bomb and then blow themselves and others up? That particular pathology seems to be one of the symptoms of theism, not atheism. Atheists are much too fond of this world than to end it for themselves and other living beings through such a self-destructive act.
Instead, we write essays, or post angry or ironic memes and messages on Facebook. They make the point well enough, without killing our fellow human beings.