I wonder if those who oppose the existence of moral absolutes realize that the ONLY alternative is absolute moral relativism. This means that ANYTHING is acceptable if a person’s conscience permits it, this would include murder, rape, terrorism and treason.
The problem is that your moral absolutes are, in practice, a kind of moral relativism.
We (and I'll include all of us here) interpret these things according to our convenience. Now, if the commandment says, "Thou shalt not kill", I will assume that is what it means. Now, let's suppose, that no one kills i.e. not criminals, or murderers, citizens, police or soldiers of any kind....that would be a good thing, in my opinion. However, we always say, "You did it first so I am justified." Another excuse is "God is on our side" so therefore we are justified or "I am good and you are evil". Personally, as much as I support our troops, I cannot go so far as to claim that the god of this vast universe is on our side as comforting as that may be.
Ironically, since I am less of a literalist than many of you, I believe that the commandment means what it says. However, we (and I must regrettably include myself) are not willing to live by it.