Regardless of the discussions relating to cultural relativism - this is not an example of tribal law. This is drunken retribution. Payback involves a process of mediation and an agreed upon punishment. This also happened in arrende land - not walpiri land. the walpiri are guests here and need to respect the customs and laws of the arrende - which they normally do - except when substance abuse clouds their minds, like it clouds anyone minds. This is not okay by arrende standards or walpiri standards, and is simply yet another example of vengeance carried out by those feeling justice is yet to be served. If formal payback had been allowed and agreed upon this matter may have been settled to every parties satisfaction. But as yet it has not.