Revenge

Revenge is defined as committing a harmful action against a person or group in response to a grievance, be it real or perceived. Vengeful forms of justice, such as primitive justice or retributive justice, are often differentiated from more formal and refined forms of justice such as distributive justice or restorative justice.

Social psychologist Ian McKee states that the desire for the sustenance of power motivates vengeful behavior as a means of impression management: "People who are more vengeful tend to be those who are motivated by power, by authority and by the desire for status. They don't want to lose face".

Vengeful behavior has been found across a majority of human societies throughout history. Some societies encourage vengeful behavior, which is then called a feud. These societies usually regard the honor of individuals and groups as of central importance. Thus, while protecting their reputation, an avenger feels as if they restore the previous state of dignity and justice. According to Michael Ignatieff, "Revenge is a profound moral desire to keep faith with the dead, to honor their memory by taking up their cause where they left off". Thus, honor may become a heritage that passes from generation to generation. Whenever it is compromised, the affected family or community members might feel compelled to retaliate against an offender to restore the initial "balance of honor" that preceded the perceived injury. This cycle of honor might expand by bringing the family members and then the entire community of the new victim into the brand-new, endless cycle of revenge that may pervade generations.

Francis Bacon described revenge as a kind of "wild justice" that "does [..]. offend the law [and] putteth the law out of office."

Feuds are cycles of provocation and retaliation, fueled by a desire for revenge and carried out over long periods of time by familial or tribal groups. They were an important part of many pre-industrial societies, especially in the Mediterranean region. They still persist in some areas, notably in Albania with its tradition of gjakmarrja or "blood feuds", revenge that is carried out not only by the individual, but by their extended relations for generations to come.

Blood feuds are still practised in many parts of the world, including Kurdish regions of Turkey and in Papua New Guinea.

In Japan, honouring one's family, clan, or lord through the practice of revenge killings is called "katakiuchi" (敵討ち). These killings could also involve the relatives of an offender. Today, katakiuchi is most often pursued by peaceful means, but revenge remains an important part of Japanese culture.

Philosophers tend to believe that to punish and to take revenge are vastly different activities: "One who undertakes to punish rationally does not do so for the sake of the wrongdoing, which is now in the past - but for the sake of the future, that the wrongdoing shall not be repeated, either by him, or by others who see him, or by others who see him punished". In contrast, seeking revenge is motivated by a yearning to see a transgressor suffer; revenge is necessarily preceded by anger, whereas punishment does not have to be.