Mafia existed in towns as well as countryside from the start.

Evidence

The mafia, moreover, is not — as has recently been claimed (see Blok 1974) -— something which originates only in the countryside. Since its inception (Franchetti informs us) it has been an urban as well as a rural phenomenon. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 2170

Categorization

• QUESTION: Wait with score clarity on the ‘size’ I’ll note question marks worth chasing into other sources.