“it would have worked to deter the crime committed here”
In our desire for justice, we lose sight of the fact that it is impossible to stop every single murderer, just as it is impossible to stop every single terrorist attack. There is just no way to stop a single deranged individual who wants to do evil and doesn’t let anyone else know what he is doing. Even Singapore, which has probably the most draconian and certain “justice” in the world still has a few homicides a year.