Falco graduated from Medical school in Rome. Initially he was a follower of Giuseppe Mazzini and began his political activity in 1887 as a member of Mazzini's Republican Party. By the end of the year, he started to adopt a socialist position. As a journalist, he wrote in "L'Emancipazione di Roma" in 1888, and successively in "La Tribuna", "Il Messaggero", "La Scintilla" and "Il Popolo toscano".
