The Nazis hated a lot more than just Jews of course, "untermenschen" was the term. I think of the term as meaning someone who wants "purity" and a nationalistic view of life, you want "France for the French", as an example (which is a fairly popular notion). I'd oppose it to multiculturalism. Hitler viewed the US as a nation of mongrels because we had so many different "tribes" more or less mixed together (less back then).
Curiously, Japan fits this definition pretty closely.
Where is gets extreme is when measures are considered to achieve "national purity" after it was lost, like in the US how that would mean we'd have to kick out all the European Americans et al.
