It's just lazy and plain wrong to constantly reference the far-right as 'Nazis'. The Nazis were a political far-right party that ruled over Germany in the 1930's and 40's. The people you're referring to are fascists, not 'Nazis'.

If someone is a communist does everyone refer to them as a Bolshevik? No, because the Bolsheviks were a political party in Russia. If you're going to talk specifically about the Nazis as a political party, fine use the name of that political party. Otherwise stop bastardising a word so more people read your work.