dawkins
The Italian invasion of Ethiopia was colonial expansion and conquest, resulting in heavy casualties among the Ethiopians. All colonizing countries (including our own) have been guilty of similar things, especially when a mechanized army has been fighting local forces armed only with simpler weapons.
The matter becomes even more complicated when we consider, say, the genocide in Rwanda in 1994. No-one has claimed that the Hutus were Nazis but genocide was practised on an appalling scale.
The best analogy when considering totalitarian states guilty of mass murder is that, while Stalin and Mao used (effectively) a blunt instrument, the Nazis used a surgical scalpel.
The difference between Fascism and Nazism is discussed here:
http://en.wikipedia.org/wiki/Fascist#Differenc es_and_similarities_with_Nazism
(You will note, as commonly happens with political articles, there is some dispute over accuracy or neutrality, but the differences between the two ideologies are much as I previously understood them.)