I don't follow the logic here. Evolution does not purport to be an ethical system. Nor does it claim to be a theological system. Therefore, evolution has nothing to say about what constitutes a moral or immoral act.
It is a religion that does away, quite nicely with God. There is no need for one, as it elevates man to the highest being on the food chain. Atheism, Communism, Marxism, socialism, all use it to re-educate the young, making them much more pliable to the aims of the State. Look at the recent history and tell me it hasn't done its job effectively. Without God, the State can declare what is moral and what is immoral. Man without God's Word to guide him, is just another animal, deciding to father children without caring for them,(welfare) killing them if it pleases him,(abortion on demand)(killing the elderly) experimenting on them (some educational programs) and on and on. It pretends at first to be a system to help the poor, but it quickly turns into a beast bullying and devouring its own people