Isn't a bit bizarre from the author to point the finger to Italian anarchists for this unsolved case? I mean the "pair of Italian-American anarchists had been indicted five days earlier for bank robbery and murder" he mentions are none less than Sacco and Vanzetti, who were victims of one of the most spectacular miscarriages of justice willingly perpetrated for political reasons I can recall. To find an Italian anarchist guilt of something in the US during the 20s proofs were not really a requirement, so this case wouldn't end up unsolved.