We're having a productive, sincere conversation here!
I don't see any relationship, necessary, causal, or otherwise, between an executioner and a pragmatic principle of equality.
But you do see a relationship between racist/nationalist/fascist ideology and racist/nationalist/fascist executioners, right?
http://www.jewishvirtuallibrary.org/jsource/Holocaust/battal...
I certainly can't interpret your post in any other way. (Although I can't interpret "pragmatic principle" in any way at all - it makes me think of jumbo shrimp.)
So essentially, you see a necessary and causal relationship between fascist ideology and fascist terror, but you don't see a necessary and causal relationship between communist ideology and communist terror. Or to use the Russian color codes, you see a relationship between White Terror and White ideology, but not between Red Terror and Red ideology.
http://en.wikipedia.org/wiki/White_Terror
http://en.wikipedia.org/wiki/Red_Terror
Perhaps you won't take my word for it, but you don't need to - the truth isn't hard to find. I can guarantee you 100% that almost everyone involved with both these systems of terror was completely drenched in, convinced by, and in thrall to the ideologies they served.
General Blokhin, for example, single-handedly murdered a substantial percentage of the Polish aristocracy. As he is doing so, is his mind a blank? Or does he conceive himself as freeing the Polish workers and peasants from the grip of the alien, rapacious hereditary nobles? What do you think? With every bullet in the back of some stuck-up count's neck, he's bringing Poland closer to equality.
You'll no doubt agree on the ideological nature of Nazi crimes. The "ordinary men" of Reserve Police Battalion 101 are in exactly the same boat - in their minds, as they slaughter the Jews of Poland, they think: the Jews caused this war, we are freeing Germany from Jewish oppression.
Likewise, as American airmen incinerate hundreds of thousands of German and Japanese civilians, they are thinking: the Huns and the Japs caused this war, now they're paying the price.
We cannot know the mind of any of these individuals. However, the collective propaganda mind of World War II is very easy to recall - all we have to do is read the texts. There is no shortage of American and Soviet propaganda that, read in context, is just as horrifying as anything Goebbels produced. Do you want to hear FDR sneering, raving, and lying like something out of Hitler's Greatest Hits?
http://www.ibiblio.org/pha/timeline/411027awp.html
So should we excommunicate it all? Or do you not like that word? Too Catholic, perhaps?