A point made by Kato-san

It is not the main thing in the “幽霊と語る” film, but…

He told there are two exceptional cases in which a state forces its nation to commit homicide.  The cases are war and death penalty.

If a system of law has a commandment “you shall not kill”, then having death penalty in the system leads to contradiction.  Clear.  But did he said something similar in the film, or is this just what I thought…