ow secret is the memorial to anarchists Sacco and Vanzetti by Gutzon Borglum, the sculptor of Mount Rushmore? So secret it was kept out of public view for 60 years and still is only intermittently displayed. Italian immigrants Nicola Sacco and Bartolomeo Vanzetti, executed August 23, 1927, for the murder of a factory payroll manager, were memorialized by Borglum in 1937. But so controversial was their case, the monument was three times rejected by the city; even today, it is displayed only occasionally in the Boston Public Library, where it’s kept along with a wealth of other art. The library also has Sacco's and Vanzetti’s ashes and their death masks. Moskal