You seem to feel I'm predjudiced against atheists...I'm not.
I'm simply saying that there are 10 Commandments to live by--anyone can choose to follow them or not.
Atheists decide what is right based on their own personal views, and therefore atheists can give themselves permissions to do whatever they'd like without consequences.
Christians (and many other religions) do not condone murder, and there are consequences for those that choose to ignore God's guidance and go their own path. And those consequences do indeed serve as a deterrent.
You may (of course) be able to find and serve outliers as examples, but that doesn't change the fact that those believing in God (and living by HIs words) are less likely to commit crimes than those that only have to listen to themselves to determine what is right.
Individual moral relativism is not the answer...