Over at "The American Interest," Eliot A, Cohen gives a cultura-moral rather than a demographic explanation for our "Age of Trump." http://www.the-american-interest.com/2016/02/26/the-age-of-trump/
He begins by pointing out that politicians have always been venal, but showing it in public is new. Churchill learned that humbug is needed for society to work. Some call it decorum, convention, virtue, etc.
Cohen ends this way:
The rot is cultural. It is no coincidence that Trump was the star of a “reality” show. He is the beneficiary of an amoral celebrity culture devoid of all content save an omnipresent lubriciousness. He is a kind of male Kim Kardashian, and about as politically serious.He is a kind of male Kim Kardashian, and about as politically serious. In the context of culture, if not (yet) politics, he is unremarkable; the daily entertainments of today are both tawdry and self-consciously, corrosively ironic. Ours is an age when young people have become used to getting news, of a sort, from Jon Stewart and Steven Colbert, when an earlier generation watched Walter Cronkite and David Brinkley. It is the difference between giggling with young, sneering hipsters and listening to serious adults. Go to YouTube and look at old episodes of Profiles in Courage, if you can find them—a wildly successful television series based on the book nominally authored by John F. Kennedy, which celebrated an individual’s, often a politician’s, courage in standing alone against a crowd, even a crowd with whose politics the audience agreed. The show of comparable popularity today is House of Cards. Bill Clinton has said that he loves it.American culture is, in short, nastier, more nihilistic, and far less inhibited than ever before. It breeds alternating bouts of cynicism and hysteria, and now it has given us Trump.The Republican Party as we know it may die of Trump. If it does, it will have succumbed in part because many of its leaders chose not to fight for the Party of Lincoln, which is a set of ideas about how to govern a country, rather than an organization clawing for political and personal advantage. What is at stake, however, is something much more precious than even a great political party. To an extent unimaginable for a very long time, the moral keel of free government is showing cracks. It is not easy to discern how we shall mend them.