Luzzatti, who took office in 1910, was one of the world's first Jewish heads of government (not converted to Christianity). Another Jew, Ernesto Nathan served as mayor of Rome from 1907 to 1913. By 1902, out of 350 senators, there were six Jews. By 1920, there were nineteen Jewish senators. Pope John Paul II gave access to some formerly secret Vatican Archives to scholars, one of whom, David Kertzer, used information thus obtained in his book The Popes Against the Jews. According to that book, in the late 19th and early 20th centuries, the popes and many Catholic bishops and Catholic publications consistently made a distinction between "good anti-Semitism" and "bad anti-Semitism". The "bad" kind directed hatred against Jews merely because of their descent. That was considered un-Christian, in part because the church held that its message was for all of mankind equally, and any person of any ancestry could become a Christian. The "good" kind denounced alleged Jewish plots to gain control of the world by controlling newspapers, banks, schools, etc., or otherwise attributed various evils to Jews. Kertzer's book details many instances in which Catholic publications denounced such alleged plots, and then, when criticized for inciting hatred of Jews, would remind people that the Catholic Church condemned the "bad" kind of anti-Semitism. Approximately 5,000 Italian Jews were conscripted to the Royal Italian Army during World War I and about half of them served as officers (this was due to the average higher level of education among Italian Jews). About 420 were killed in action or went missing in action; about 700 received military decorations. Jews during the Fascist era A significant train of thought inside Italian Fascism, influenced by Nazism and its race theories, actively promoted anti-Semitism. Jews were depicted both as "rootless cosmopolitan" capitalist bourgeois and as communists. The most notable figures associated with this point of view were Julius Evola, Paolo Orano, Roberto Farinacci, Telesio Interlandi and Giovanni Preziosi. However, at least until the promulgation of the 1938 racial laws, a number of Italian Jews were sympathetic to the regime and occupied significant offices and positions in politics and economy. It is estimated that 230 Italian Jews participated in the October 1922 March on Rome that brought about Mussolini's ascent to power. The 1938 Italian census recorded 590 Jewish "old fighters" who had joined the National Fascist Party before its seizure of power in 1922. Examples