The Museum of Fine Arts this week unveiled “The Capitoline Brutus,” a rare bronze sculpture dating to 300 BC and on display for the first time in the United States. A crowd of onlookers, including MFA director Malcolm Rogers , congressman Michael Capuano , Italian Consul General Giuseppe Pastorelli , and Filippo La Rosa, diplomatic adviser to the Mayor of Rome, all applauded. Brutus remained stone-faced — OK, bronze-faced.