We are equal. To get to the root of this misconception, we have to realize that the theory of human superiority exists ONLY because of religions (especially christian religion). Human is just like any other animal, we don't diverse any special treatment.
Without animals or plants we would not have existed so from this we can draw the conclusion that we are all as equals. We have evolved to be more intelligent just as other animals have evolved to adapt to the environments. We may be more intelligent and have more influence over the earth but this is not what determines importance as importance is defined as "the state or fact of being of great significance or value".
WE all know that if we were to work as a community we could accomplish so much more. It is true that we are powerful and intelligent, but at the end of the day we could not exist without other living organisms, animals or plants so, they must be more important if they keep us alive, and for those who want to argue that we keep them alive, which in some cases is true then I suggest you come up with a theory of how we could exist or have come into existence without any animals or plants.
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.