Can genocide ever be justified?

Injustice is always justified... Justice needs no justification because all accept it is right when it is done... But we do Genocide not because it is just or injust, but out of fear of those killed, that by numbers or intelligence they will roll over us and destroy us...

If you want to read a real fun book; try The Iron Dream, by Norman Spinrad, I believe... I no longer own a copy, but it is made to seem as though written by Adolf Hitler who never became the leader, and instead wrote science fiction... He has these characters like Doms, and Lizard Skins; products of past nuclear wars... And the funny thing is that you can actually begin to see them in the street and take the Arian side of things... And is that so bad??? Well; in a word, yes... People have lost the feud which was a way people had of accomodating each other, and at the same time keeping themselves hard and sharp, very much, on their guard... When the Germans presumed that war was the natural condition of mankind they were only in part correct...With the feud, people were able to limit their populations, keep themselves genetically strong, keep justice and morality always in the front of their thoughts, and constantly nurture the elements essential to democracy and strong communities... Laws in forcing peace promoted injustice, but primitive people always jumped at the promise of law -of justice with peace because they did not forever have to be on their guard... But what was of short term benefit ended always in wide spread injustice that spread out of nation states and has literally swept the world... Most of what was done to the Jews, for example, was done with the force of law behind it... Law in the end provided only token resistence to war or injustice...

So; the answer to your question would have to be: what is a foreign people, or race as opposed to what is an alien enemy??? When cultures clash only one wins... When species clash, one becomes servant and the other master unless the servant will not be mastered...

of course it can. just read ender's game.

Always we lock down the shielding mechanisms to take blows from both directions, majority vote for extermination or not.

We pain against our own sides. Rear rank contains the endgame.