you can not compare with the Sicilian Mafia Mafia American, for a number of reasons:
the Sicilian Mafia by the late nineteenth century, indiscriminately killing cops, politicians, men, women and children that anyone who gets in it way;
Until maxi trial 1986, the Mafia did not exist;
the Mafia until 1992 and even now killed all the judges and politicians at all levels who opposed to them, the American Mafia came near it, when Gotti proposed to kill Giuliani;
To 1993 to 1995 has carried out a campaign of terrorist acts throughout Italy;
the mafia kills all the relatives of the traitors (Buscetta lost 14 relatives in a year);
has forced the Italian government to sign an agreement sai d the ''Papiello'' to stop the slaughter, with the help of the deviated secret services;
played a role in the global world traffic of drug until it was recently ousted by the Ndrangheta.
And I could say many more but these are the most important