Later, Lanzillo wrote to the national syndicalist journal "La lupa", and was an importance early collaborator to Benito Mussolini's newspaper "Il Popolo d'Italia".
Later, Lanzillo wrote to the national syndicalist journal "La lupa". From 1912, Lanzillo published under Benito Mussolini editorship, contributing to "Avanti!", "Utopia" and "Il Popolo d'Italia".