What is the similarity between the Italian mafia and the Bible?   Answer here

A Vendetta is basically a feud between two or more groups of people, especially entire families and clans. A vendetta begins when one family correctly or incorrectly believes itself to have been attacked, insulted or wronged by another. Intense feelings of resentment result in the initial retaliation, which leads to the other family feeling equally resentful, angry and vengeful. Ultimately there is a long-running cycle of retaliatory violence.