"Yeah, I believe murderers should be executed by the state (on the testimony of 2 or more witnesses, with false witnesses subject to the same punishment as the convicted)."
Well, what is murder as defining it will better equip understanding of its nature and perhaps our general approach to the subject. Well, the act of homicide means the taking of a human life. However this is just the act, or the actus reus in legal terms. For murder as well as the accompanying homicidal act there also needs to be an actual intent to commit said act, or in the Latin, Mens Rea. The problem is the grey areas; what may be arguably murder to one person could be different to another. Murder is the state's definition, ie it's the prosecution's job to prove murder whereas the defendent's attorney's job is to prove it is either not murder or other lesser offence albeit still serious. What about self defence? A scenario which asks us to consider this may be a family member encounters a burglary and to protect his family he shoots an intruder. Is this still murder? At what point would it be murder or alternatively what point would it change to said lesser offence albeit serious such as manslaughter or other? The likelihood is what the state regards initially as murder will be reduced to the lesser alternative in many cases, why because it would not be justiable if the law were just black and white without any grey areas, ie things which make it too complex to categorise an offence as murder and the consequence of depriving life, ie prison for the other.
"Unfortunately, whilst the communists and other assorted villains were taking over the world, they didn't like the idea of their agents being apprehended, tried and shot, so they generally outlawed capital punishment wherever possible. The result is that communism, and villainy in general, is now a much safer and more profitable career choice. (I don't believe the church should stone anyone, though)."
The subject matter here is communism although the law is still operational under communist or capitalist societies. Capitalism and law will have relatively more laws, ie rules which govern its societies. In simple terms communism means a society that shares everything. In contrast, capitalism means the right to own goods coupled with the right to earn as much money as possible without the state intervening. It is generally in the interest of Western countries to make communism a deviant ideology. How we view the church and or the bible is nevertheless relative to the society which we live, ie the communist or capitalist societies. In Acts, the Holy Spirit, it could be said, was saying Christians should share so that each has enough. On the other hand, the rules of capitalism are more obvious for Christians in practise, why because this is what we practise on a daily basis. For instace, we go to work and each is paid according to his responsibilities or qualifications. These are just two basic strands for either side.