the purchaser might refuse to pay. The mistrust and fear of being cheated with no recourse might prevent these two agents from making a profitable transaction. To guarantee each other's honesty, the two parties can ask the local mafia clan to oversee the transaction. In exchange for a commission, the mafioso promises to both the buyer and seller that if either of them tries to cheat the other, the cheater can expect to be assaulted or have his property vandalized. Such is the mafioso's reputation for viciousness, impartiality, and reliability that neither the buyer nor the seller would consider cheating with him overseeing the deal. The transaction thus proceeds smoothly. The Mafia's protection is not restricted to illegal activities. Shopkeepers often pay the Mafia to protect them from thieves. If a shopkeeper enters into a protection contract with a mafioso, the mafioso will make it publicly known that if any thief were foolish enough to rob his client's shop, he would track down the thief, beat him up, and, if possible, recover the stolen merchandise (mafiosi make it their business to know all the fences in their territory). Mafiosi have protected a great variety of clients over the years: landowners, plantation owners, politicians, shopkeepers, drug dealers, etc. Whilst some people are coerced into buying protection and some do not receive any actual protection for their money (extortion), by and large, there are many clients who actively seek and benefit from mafioso protection. This is one of the main reasons why the Mafia has resisted more than a century of government efforts to destroy it: the people who willingly solicit these services protect the Mafia from the authorities. If one is enjoying the benefits of Mafia protection, one does not want the police arresting one's mafioso. In Sicily, protection money is known as pizzo; the anti-extortion support group Addiopizzo derives its name from this. Mafiosi might sometimes ask for favours instead of money, such as assistance in committing a crime. The amount of money that the Mafia extorts from firms in Sicily correlates weakly with the revenue of the firm. As a result, smaller firms end up paying a higher share of their profits to the Mafia than larger firms; sometimes as high as 40% of profits for smaller firms and as low as 2% of profits for larger firms. The pizzo is thus a sort of regressive taxation that hurts