Recall the fundamental premise of politics: intra-species conflict stems from each phenotype unconsciously trying to alter the environment to favor their respective reproductive strategies.
Leftism and rightism emerge from the free rider problem in group selection. It’s about trust, which leftists are fundamentally incapable of having, deserving, or understanding. Rightism is the political expression of high in-group preference and is primarily concerned with enhancing group fitness and punishing defectors. Leftism is the political expression of high individual preference and bad faith, and is primarily concerned with removing the group’s ability to punish cheaters. You can explain all political activity this way: rightists vote to make marijuana illegal because this punishes social parasites, whereas leftists vote to make marijuana legal.
Elite minorities profess leftism and practice rightism in their private lives because maintaining their position depends on anarchotyranny. Elites must punish parasitism in their own ranks while enabling it in the people they rule, to keep them weak. Hence 1) the war of the elites and the fringes against the middle, and 2) Steve Sailer’s leapfrogging loyalties rule: immigration for thee and a wall for me. It’s not even paranoid to predict that testosterone levels are dropping because the Jews are poisoning the water, it’s actually a straightforward prediction of mainstream moral psychology.
The Daily Shoah guys are about half-right, as always—they think the common denominator in leftism is Semitic anti-Aryanism. But this dynamic is older than whites and Jews.
This divergence in function gives rise to the activities and personality traits we associate with left-wing politics. The leftist overemphasis on the harm/care moral axis, for example, simply correlates with the moral underdevelopment we’d expect from the generally retarded denizens of the lower classes. You’ll please note that harm/care goes right out the window as soon as Donald Trump is the subject of conversation—suddenly leftists are all in favor of drone strikes without oversight. Like the proverbial golden hammer, care/harm is the only thing they know, and all homo politicus ever wanted was to take to the streets and crack some heads.
Ref: Jonathon Haidt’s The Righteous Mind and Anonymous Conservative’s The Evolutionary Psychology Behind Politics