There was a solemn article in the local paper seriously advocating systematic exterminating of the entire German nation as the only proper course after military victory: because, if you please, they are rattlesnakes, and don't know the difference between good and evil! (What of the writer?) The Germans have just as much right to declare the Poles and Jews exterminable vermin, subhuman, as we have to select the Germans: in other words, no right, whatever they have done.
J.R.R. Tolkien (2014). “The Letters of J.R.R. Tolkien”, p.93, Houghton Mifflin Harcourt