In his 1964 book Thought and Change, Ernest Gellner talks about how some nationalism emerges when a linguistic-cultural (or ethnic) minority contained within a larger state that is dominated by a different linguistic-cultural group. What happens is that the minority elite, which participates in the regime, recognises it could do better being big fishes in a small pond, as opposed to swimming around the big pond competing with other big fishes at a disadvantage. They form an intelligentsia which tells the great mass of the ethnic minority the reality of their situation, and motivates them to demand independence.
Some twenty years later, in Nations and Nationalism, Gellner developed one of those sociological typologies that irritate scholars of history, because the categories depicted can result in exceptions that must be hand-waved away somehow but which are meat and drink to historians. I found a useful table of these typologies in an academic article by Brendan O'Leary, 'On the Nature of Nationalism', published in the British Journal of Political Science in 1997.
So how does this apply to the amazing presidential trajectory of Donald Trump? As is well known, college-educated people (the elite) are, with the exception of Republican party regulars, not really on his side. The power-holders class is also somewhat split and those most heavily invested in globalisation appear to be sceptical about Trump. Meanwhile, he does better among the less well-educated. Gellner's typologies have six factors -- power-holders vs powerless, educated vs uneducated and shared culture vs culture not shared. These typologies intersect to produce various outcomes related to what state will emerge when confronted by fundamental economic change.
Your typical educated urban elitist probably watches HBO series, is interested in tennis and drinks craft beer. Meanwhile, smaller-city service worker watches Two Broke Girls, is interested in NASCAR and drinks mass-produced lager. Not much of a shared culture there.
Plug those into Gellner's typologies, and you confront a Type 4 outcome 'Ethnic nationalism'.
Now, actually, based on Gellner's criteria, both groups would count as Educated. I cheated a little bit there. But if the degree of education required to function in what the Marxisants call 'late capitalism' has gone beyond the simple 3 'R's of Type 6 'Classical liberal Western Nationalism' -- well, then, I might be on to something here!