Murder in a general definition is never acceptable. But in the same time it is acceptable for the greater good, like wars for example. Or defending yourself fighting for your life. On the other side, you may think… someone may murder someone. However it never gives you the right to kill him. If you kill, is it going to make any difference? Or, another question, is death penalty a crime? Idk…it’s a very consistent debate with various answers. Just like our imagination.