Morality is about compassion, and nothing else. It is "wrong" to kill a person because it would cause suffering to those who love and depend on that person. Even if there were a few specific cases where a person is unloved, it is reasonable to apply the principle to all people.
And in fact, to all creatures that live in social groups. Of course, there are cases where this principle could justify killing someone. Specifically, when the suffering caused by the death is outweighed by the suffering that results from the person being alive.
But that's only in principle; great care would be necessary in applying it.
I thinking killing someone is perfectly fine under the right circumstances (they are trying to kill you, they have been convicted of heinous crimes and receive the death penalty from the court) But taking a human life just because is wrong because they have done nothing wrong and you are preventing them from having all kinds of good times and memories and everything else.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.