Except of course that the Nazis were not socialist and no reliable mainstream source labels them as such Read it again In advanced liberal democracies perhaps more than anything else the right has been defined in opposition to socialism or social democracy In other words liberal democracies today define left and right in this way The definition goes on to state that right wing includes nationalism and for extreme right parties racism and fascism The Nazis were nationalistic racist and fascist thus extreme right wing This is what the sources say so this is what we use