As part of our survival mechanism, we humans want what we want when we want it. Tribalism is one means for getting what we want via group means. Tribalism is also how we block other groups from getting what they wan at our expense-- an extension of self, war.

Power hungry demagogs like Stalin, Hiller, Putin and Trump concentrate on playing to the human survival mechanism for there own personal ambitions to the distruction of all in the process--part of life's brutal game of musical chairs.