The Prague Cemetery Chapter 6
Simone justifies his hatred of people by vilifying them.
Les Mystères du peuple
a series of 19 novelettes by Eugene Sue, author of The Wandering Jew.
Sue undertakes in "The Mysteries of the People" to show the massacres of history, and class struggle and oppression of the people. He intends to teach history so that people learn from it. The book was considered by the authorities an "outrage against public morality and religious morality" and was banned. Illustration from the book: 
Elements of the Protocols were plagiarized from the French political satirist Maurice Joly's fictional Dialogue in Hell, a thinly-veiled attack on the political ambitions of Napoleon III, who, represented by the non-Jewish character Machiavelli, plots to rule the world. Joly, a monarchist and legitimist, was imprisoned in France for 15 months as a direct result of his book's publication. Ironically, scholars have noted that Dialogue in Hell was itself a plagiarism, at least in part, of a novel by Eugene Sue, Les Mystères du Peuple (1849–1856).
Sue wrote the proverb, "Revenge is a dish best served cold".
A chapter from Alexandre Dumas, père's The Queen's Necklace (1848) figures into the history of the Protocols. In this scene, Joseph Balsamo, Alessandro Cagliostro, and company plot the Affair of the Diamond Necklace. This scene was largely plagiarized by a novel by Hermann Goedsche, a postal clerk and spy for the Prussian secret police. Goedsche transformed Dumas's scene into a Jewish conspiracy plotting at the Jewish Cemetery in Prague. This story was used to later legitimize the Protocols. Wikipedia
Substituting some details from older plots, "there you'd have the same old pattern of the universal conspiracy tailored to present times." Eco's main theme.
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A fascinating, beautiful mistress of Napoleon III, who also was obsessed with being photographed. 
Wiki: Giuseppe La Farina (20 July 1815 in Messina – 5 September 1863 in Torino) was an influential leader of the Italian Risorgimento.
Minister of Cavour, he was highly involved in Garibaldi's departure for Sicily. Ostensibly sent by Cavour to dissuade Garibaldi from going, he in fact did little of the sort. A nationalist at heart, he was believed to be one of the few to whom Cavour actually revealed his intentions regarding the Sicilian campaign and eventual unification.
This is a Google translation:  It has a good illustration of the "ruddy face with a fine pair of whiskers, a monocle as large as the base of a glass and the air of the most inoffensive man in the world."
"Among the general's [Garibaldi's most intimate collaborators.." He had a very exciting political life. 
Another active revolutionary and politician. Does it seem like Crispi and Nicotera are on both Mazzini's and Garibaldi's side? 
"Another letter from a well-known and respected person will provide you with an introduction to one of Garibaldi's young officers, Captain Nievo, whom Garibaldi has apparently appointed deputy quartermaster general." "We are told he is a man of letters, and it seems he has a reputation for being a most upright man." He wrote several books, and one was published posthumously.  Later: "So young, and already a great writer. A true poet. His brilliance shines. He's always along, gazing into the distance, as if trying to reach to the horizon."