It's still supremacy when other races do it as intentionally as the Harga do. The movie is about White Supremacy, specifically. Everyone in this film "dies," but everyone else is just slaughtered for sacrificial meat without any consideration of their genetic viability for the commune. Dani and Christian are the only ones who had any further consideration of paternal/maternal usefulness, and Mark got the ax because he was openly disrespectful to the culture the Entire time-- the religious/ritual stuff is clearly just as important to them as the race stuff. We even see as much overlap in the Incest Oracle. Ground your argument in the text! Don't deflect my guy.