How does the Casalesi make most of their money? Is it drugs? There are only a few Camorra clans within Naples that can compare to the casalesi throughout history. Nuvolettas, Zazas are two examples.
the alleanza di secondigliano (contini/licciardi/mallardo) are very powerful
Are they still more like street gangs?
You have the street punks and the baby gangs but in the background you have crime families that are part of the system. This 'systema' pervades much of life in Naples.
