Had the Roman Empire still existed your point would have had some merit, but it doesn't and you don't. We could ask the Irish about what they think of the British killing off half their population, for their religious beliefs (sounds awfully familiar). Not even the Nazis managed to do that in any of their occupied areas. Heh, even Stephen Fry, himself being Jewish, and British, likened Oliver Cromwell to Adolf Eichmann. Difference is Germany is not naming things after Eichmann or proudly displaying statues of him...