I think it boils down to a split between the globalists and the nationalists, those who think globally, who disdain borders, and those who believe that their country matters. The globalists imagine themselves to be morally superior beings who embrace all mankind (oops, I mean all personkind), as opposed to those backward, ignorant, inferior people who love their country, are proud of their ethnicity, and who like living with people more or less like themselves.
The USA is exceptional in that people actually do make connections across tribal lines sometimes, more than has ever occurred before in human history, and that’s great, but still it doesn’t happen all that much. Black people and white people and Hispanic people and Middle Eastern people and Asian people and Jewish people, Czechs and Slovaks, are all very different, culturally and (dare I say it) genetically.
The deniers of this obvious, scientific truth are in charge in Europe and, to a lesser degree, the United States. The result is very very bad policy like open borders, no child left hehind, aid to dependent children, affirmative action, Muslim immigration, etc.
The globalists are winning of course. They are way out in front. But Trump has exposed the whole charade for what it is. I have no doubt that they will be able to deny him the Republican nomination. They will do whatever it takes. But the con is not holding. The next few years promise to be very interesting.