[seadan83]

I don't think 'Tribe' is really defined as merely a "political" group in the OG article. It's more a system of government rather than political affiliation. In tribalism, it is rule-of-the-strong, dominance over the weak; it is not 'rule of law'. Any group that believes in rule of law rather than dominance of the weak is not tribalistic. The article posits that the shift of tribalism comes about as a group can tear down the barriers that the rule of law provides - at which point society readily devolves to tribalism.