Italy was fascist. Germany was National Socialist. Fascism is a political system. National Socialism is a political religion.
Are you seriously claiming that every Catholic who supported the fascist regime of Mussolini, a Catholic, was somehow not really Catholic?
No but the 1948 Italian election is illuminating in that the atheist Communists got over 30 percent of the popular vote at a time when the Red Terror was very real. A third of the population voted Communist.
How many Jews were there in Italy at that time, and how were they treated? Protestants weren’t even treated especially well, what few there were. I know Waldensians didn’t get full religious rights in Italy until 1984.
None of the groups were treated as badly by Italians than they were by Germans. By 1943 the Italians had enough, arrested Mussolini and signed an armistice with the allies.
If so, then who should follow his interpretation?
If yes, how is each individual Protestant different from the pope?
What authority canonized the Protestant collection of Books (Bible = Biblia = Books)?
Was this authority infallible?
If not, how can the Bible be inerrant?
If so, what was this Authority? And when did Its teaching authority dissolve?