They may have been Camorrists or Mafiusi at home, but they are so no longer.

They are "on the level," and stay so; only--they are "men of honor." And what is the meaning of that?
Simply that they keep their mouths, eyes, and ears shut so far as the Mala Vita is concerned.

They are not against it.

They might even assist it passively.

Many of these erstwhile criminals pay through the nose for respectability--the Camorrist after his kind, the Mafius' after his kind.