Krvna osveta
Krvna osveta (Serbian Cyrillic: Крвна освета) ("blood feud") is a law of vendetta among South Slavic peoples in Montenegro and Herzegovina that has been practiced by Serbs, Bosniaks, and Croats (predominantly from Herzegovina) throughout history. First recorded in medieval times, the feud is typically sparked by an offense such as murder, rape, assault, or similar wrongdoing.