Having acquired considerable local influence through his business activities, Brunetti seems to have been introduced to politics by the writer Pietro Sterbini [it] and the notary Felice Scifoni [it] who in 1827 led him to join the Carbonari, a revolutionary group advocating for the political unification of Italy.[1] In 1835, encouraged by the Italian nationalist Mattia Montecchi [it], he became a member of Young Italy, a unification movement led by the activist Giuseppe Mazzini. In 1837, he came under police surveillance because of his involvement in politics.[1]