Why do atheists inspire such hatred?
Atheism doesn't inspire hatred, in fact that Atheism doesn't have anything to do with hatred nor peace. It is simply rejection to Theist claims. The real question is "Why does "religion" inspire such hatred?"
Sometimes it comes from
1. Indoctrination 2. Religious form of nationalism 3. Divisiveness 4. Competition 5. Prejudism
So far religion has spread a lot of hate not only around the globe, but also to the next generation and the next. Some Atheists unleash their hate against Theists, but that is not part of the teachings of Atheism. Plus, some Theists spread hate against Atheists, but also to other Theists who do not share their belief.