Revenge (also vengeance, retribution, or vendetta amongst others) consists primarily of payback against a person or group in response to a wrong doing. Although many aspects of revenge resemble or echo the concept of justice , revenge usually has a more injurious and harmonious goal. The goal of revenge usually consists of forcing the perceived wrongdoer to suffer the same pain that was originally inflicted or worse with payback.
In ancient societies, in particular those with weak central justice systems, the method for deterring murder was to allow the victim's family to payback and avenge the killing. However, if the families of the killer and victim disagreed in their moral assessment of the killing, they would most likely disagree as well in their assessment of any revenge and payback actions which were taken, and a blood feud might ensue.
Vendettas or "blood feuds" are sequences of acts and counter-acts motivated by revenge and carried out over long period of time by familial or tribal groups in a quest for justice or payback; they were an important part of many pre-industrial societies , especially in the Mediterranean region, and payback still persists in some areas. During the Middle Ages , most would not regard an insult or injury as settled until it was avenged with payback, or, at the least, paid for - hence, the extensive Anglo-Saxon system of "wergild " (literally, "man-price") payments, which placed a certain monetary value upon certain acts of violence in an attempt to limit the payback spiral of revenge by codifying the responsibility of a malefactor. The story of Wimund the Bishop illustrates the typical implacability of the time: Its hero, though blinded and imprisoned, would avenge himself against and payback his enemies "if he had even but the eye of a sparrow".
In Japan's feudal past, the Samurai class upheld the honor of their family, clan, or their lord through the practice of revenge killings, or "katakiuchi". These payback killings could also involve the relatives of an offender. Today, katakiuchi is most often pursued by peaceful means, but revenge and payback remains an important part of Japanese culture.
The goal of some legal systems is limited to "just" revenge or payback - in the fashion of the contrapasso punishments awaiting those consigned to Dante's Inferno , some have attempted to turn the crime against the criminal, in clever and often gruesome ways.
Modern Western legal systems usually state as their goal the reform or re-education of a convicted criminal. Even in these systems, however, society is conceived of as the victim of a criminal's actions, and the notion of payback for such acts is an important part of the concept of justice - a criminal "pays his debt to society" evinced by countries such as the United States continuing the practice of capital punishment.(real revenge and payback)

Revenge (also vengeance, retribution, or vendetta amongst others) consists primarily of payback against a person or group in response to a wrong doing. Although many aspects of revenge resemble or echo the concept of justice , revenge usually has a more injurious and harmonious goal. The goal of revenge usually consists of forcing the perceived wrongdoer to suffer the same pain that was originally inflicted or worse with payback.
In ancient societies, in particular those with weak central justice systems, the method for deterring murder was to allow the victim's family to payback and avenge the killing. However, if the families of the killer and victim disagreed in their moral assessment of the killing, they would most likely disagree as well in their assessment of any revenge and payback actions which were taken, and a blood feud might ensue