Only a psychiatrist could make something so obvious in human nature sound so complicated. Let's look at this in very simple terms, baby rats in a cage, all related, to the human eye identical.
As food and water get scarce these rats (siblings) are going to turn on each other, they all want the same things but there is not enough to go around so they will have to take sides or team up to protect themselves, if they are left on their own they risk alienation and death so they pick a side, their individual chances of surviving are now much greater but some rat to go, the one unable to form good social bonds with the other rats, you could say there social failings made them favourites to be picked on in a crisis.
This could continue on until there were only 2 rats left and there was no food left, then to survive a little longer one would have to eat the other. Even if they didn't fight the weakest would die first and the strongest could survive by eating their mate.
You may abhor Albanians but if you have no dealings with them that prejudice cannot be reinforced and sustained, that doesn't mean you actually are tolerant of them just because you never meet them.
Liberal and Conservatives in the USA are very close to each other on the political spectrum when you look at world politics, in the UK they are actually in a political coalition. We as politicians only seek to accentuate the differences to make it easier for stupid people to tell us apart and give them a simpler decision to make.
Send this guy to live in the projects for a week, then send him to a posh private health spa where he gets pampered, now how is he feeling, I bet he can't wait to re-live that 1st week :-)
Some people seem to think that because they can write lots of words it bestows on them some kind of superior intelligence ....... I don't want to burst their bubble. If he was real smart he would be able to get his point across in 100 words.