A feud is a long-running argument or fight between parties—often groups of people, especially families or clans. Feuds tend to begin because one party (correctly or incorrectly) perceives itself to have been attacked, insulted or wronged by another. A long-running cycle of retaliation, often involving the original parties' family members and/or associates, then ensues.
Feuds can last for generations. In areas, or among groups, without strong central government, the feud can be the only way to seek justice between and within communities.
The Celtic phenomenon of the blood feud demanded "an eye for an eye," and usually descended into murder. Disagreements between clans might last for generations in Scotland, Ireland and Appalachia.
A similar concept existed in the Norse culture with the idea of weregild, which demanded payment of some kind from those responsible for a wrongful death. If these payments were not made, or refused by the offended party, a blood feud would ensue.
In Japan's feudal past the Samurai class upheld the honor of their family, clan, or their lord by katakiuchi (敵討ち), or revenge killings. These killings could also involve the relatives of an offender. While some vendettas were punished by the government such as with the 47 Ronin, others were given official permission with specific targets.
Traditions similar to vendetta have existed almost everywhere, as between various Arabic people, Albanians and Circassians.
Vendetta originated in societies with no central government (or where the central government did not consider itself responsible for mediating this kind of dispute) where family and kinship ties were the main source of authority. An entire family was considered responsible for whatever one of them had done. Sometimes even two separate branches of the same family could come to blows over some matter. The practice has mostly disappeared with more centralized societies where law enforcement and criminal law take responsibility of punishing the lawbreakers.
Similarly, honor killings are practised among more conservative sections of Muslim society, usually against female members of a family for perceived sexual or other transgressions.
Mutual vendetta may develop into a vicious circle of further killings, retaliation, counterattacks and all-out warfare that can end in the mutual extinction of both families. Often the original cause is forgotten, and feuds continue simply because there has always been a feud.
Some of the gang wars between organized crime groups are effectively forms of vendetta, where the criminal organization (like the Mafia "family") has taken the place of blood relatives.
In modern hip-hop, rappers nototriously engage in verbal warfare with one another, which occasionally spills over into actual violence and sometimes murder. The most high-profile feud in rap was the Tupac - Notorious BIG Feud, which included several shootings and attacks on friends of both icons. It culminated with the highly publicized assassinations of Tupac Shakur in 1996 and The Notorious BIG in 1997. Other notable rap feuds have included:
Violence | Nonwar armed confrontations
Fehde | Vendetta (justice privée) | Vendetta | נקמת דם | Vete | フェーデ | Wendeta | Vendetta