Here is a partial list of Evolutionists and/or Atheist dictators behind some of the most brutal regimes in the past few centuries - in their own words:
This entire screed is a huge fail, for a lot of reasons.
First, let us note that virtually everyone you cited was speaking from the viewpoint of one ideology or another, or in the case of Jeffrey Dahmer, from the viewpoint of very real mental illness. Ideologies are defined as a system of ideas and ideals, especially ones which form the basis of economic or political theory and policy. That is to say, ideologies are action-oriented.
Now, neither atheism nor evolutionism is an ideology in any sense of the word, since neither implies any action to be taken. Atheism is simply a lack of belief in gods. Not believing in gods does not imply any action whatever. There is no requirement to "avoid prayer," nor to kill believers nor even to tell believers that they're wrong. And evolution is simply a scientific theory, one of the most tested known to man, which does not imply any specific action to be taken. "Because I'm a Darwinist, I have to do...." what, exactly?
So for example, you point out that Margaret Sanger was a Darwinist -- but she was also a eugenicist. That is, she believed in evolution, but she had an
ideology that said "we can use evolution to make people better." No mere evolutionist believes anything of the kind. You have to add an ideology for that.
"Any ideology can morph into a super-concentrated form of tribal hate." (Clay Farris Naff, the Humanist Magazine). But since neither atheism or acceptance of the theory of evolution is an ideology, they are not the source of the problem. So you have taken a whole lot of disparate ideologies, that have led to a whole lot of misery, and by ignoring those ideologies and concentrating only on the beliefs you despise, have laid blame totally falsely--that the communist who happens to be an atheist is motivated by atheism (a lack of belief), not communism (an ideology) and the eugenicist who happens to believe in evolution is motivated by evolution (a science), not eugenicism (an ideology).
As I said, a colossal fail.