I'm not an atheist. Well, to begin with, nowadays, it has become a fashion to blame or to find religion the main cause behind any violence or linking a religion with terrorism.
Everyone who is having a stable mind, will comprehend that man made entities like religious institutions that create terrorism or violence do not represent the whole ideology of a religion as these are formed by humans. Moreover, I'm sensible enough to realize that all atheist are not murders if one atheist murders to prove that atheism is great. Then why an atheist thinks of a thirst harms someone then the whole religion is good to blame.