In contrast to the Orlanthi, the Dara Happan (and Lunar Heartland) concept of justice has two parts:
1. Proper social order. That means everyone is in their proper place, with the strong restrained from harming the weak (any more than is proper, of course), with everyone doing what is proper for the social position for the good of the community. This proper social order is derived from the gods, in particular Yelm, and entrusted to the Red Emperor to establish, maintain, and defend.
2. Vengeance against those who have wronged. The wheel of vengeance will eventually crush all those who have wronged others. One must suffer, that is part of existence, but in the end, justice requires that those who suffered unfairly must be avenged. This is derived most strongly from the Red Goddess, although there are clearly Carmanian and Spolite antecedents to this. This is usually entrusted to the Red Emperor and his family – Hwarin Dalthippa brought down the barbarians of Saird and Imther who broke the gates of Glamour, Hon-eel brought down the Pentans, Jar-eel took vengeance against the White Moonies and their blasphemies, and later avenged those wronged by the Pentan invasion, etc.
The first kind of justice is typical spelled out by written rules governing behavior and actions. The second kind of justice is subject to the whims of the Red Goddess.
Unlike the Orlanthi, the Dara Happan culture favors the idea of one ruler for everyone (the Red Emperor), one set of rules for everyone ideally, and at times even flirts with the idea of one supreme god (or goddess).
Dart Wars are not part of vengeance so much as a sanctioned outlet for the ambition of noble houses…
I wanted to make it clear that for most kinship groups, Dart Wars are not really an option for vengeance.
The Red Emperor frowns on blood feuds outside of sanctioned activities like Dart Wars as they tend to disrupt the proper social order.