Oh wait, you're talking about the "Thou Shall Not Murder" clause. Well, it depends on if you consider abortion murder? What about bombing terrorists and Iraqis? The death sentence? Eating meat?
After googling about for a few minutes, it seems that the hebrew word for Murder used in that scripture is put to "PREMEDITATED Murder without cause." Warfare, though how stupid the cause is, is still cause.
Though I am not an advocate of meat, there is nothing Biblically wrong with it. God provided animals and plants for mankind to use, but not to mistreat animals or the enivorment. I just plain out don't like it.
I am angered when people use this scripture because nine times out of ten, including when being used by 'hardcore christians' its whole meaning is swept under the rug and nobobdy gives a shit about context. If your going to quote the bible, you might as well quote the whole thing for accuracy.
EDIT: The main case on abortion from the Conservative Christian side is that the creature is a human being, the main argument I suppose should really be whether or not there is good cause.