Blood Law
Blood Law, in some traditional Native American communities, is the severe, usually capital punishment of certain serious crimes. The responsibility for delivering this justice has traditionally fallen to the family or clan of the victim, usually a male relative.

Description
Currently in the United States, only state and federal governments or military courts can impose the death penalty. Justice under Blood Law would be considered revenge killing or summary murder, and also could be an additional aggravating circumstance requiring the death penalty for the crime.

Historically, a "cursory survey of the ethnohistorical literature indicates that death was the standard punishment [for witchcraft] among Native American societies," including the Cherokee, Chickasaw, Creek, Delaware, Hopi, Miami, Natchez, Navajo and Seneca. 

In 1824 the western Cherokee passed new laws "forbidding the wanton killing of suspected witches". However, traditional views concerning personal or family-enforced retribution for serious crimes appear to have continued in both the Cherokee and Creek communities throughout the 19th Century, and in some communities through into the present day.

See also
 Blood money
 Feud
 Honour killing
 Kanun
 Gjakmarrja
 Krvna osveta

References

Cherokee culture
Native American law
Native American history