If the process of evolution is merely a function of life, a "perversion" is neither wrong or right.<quoted text>
There is no universal atheist world view, rather a huge range of possible ones. But atheism seems to encourage thought about personal ethics. Most atheists that I've talked to have developed comprehensive ethical standards, none of which have included any rationale for harming others except in the defense of oneself and others.
In evolution, "survival of the best adapted" is a better description of natural selection than "survival of the fittest." Natural selection applies to populations, not individuals. Natural selection is not about what should happen, but what is observed to occur. Human interference in the process can only distort if, favoring less adapted populations by artificially altering the criteria for adaptation. Genocide is the ultimate perversion in that respect.
And if atheists are free to develope their own moral standard, then nothing is absolutely wrong, just a matter of personal choice.
Very few atheists are willing to be honest about the implications of their worldview, and most are ignorant of them, throwing stones at others houses, not realising they are throwing them through their own glass windows when they do...