Claim: On July 29, 1900, Gaetano Bresci, an Italian-American Anarchist, assassinated Umberto I of Italy, the king who approved the Triple Alliance with the German Empire and Austria-Hungary.
Evidence: While the king was visiting Monza, on July 29, 1900, Bresci shot him four times with a five-shot .32 revolver. Gaetano Bresci (Italian pronunciation: [ɡaeˈtaːno ˈbreʃʃi; November 10, 1869 – May 22, 1901) was an Italian anarchist who assassinated King Umberto I of Italy on July 29, 1900. In 1882, he approved the Triple Alliance with the German Empire and Austria-Hungary.