Peggy Noonan has a theory
By 
Well it’s not really a theory yet, but it’s trending in that direction:
Last October I wrote of the five stages of Trump, based on the Kübler-Ross stages of grief: denial, anger, bargaining, depression and acceptance. Most of the professionals I know are stuck somewhere between four and five.
But I keep thinking of how Donald Trump got to be the very likely Republican nominee. There are many answers and reasons, but my thoughts keep revolving around the idea of protection. It is a theme that has been something of a preoccupation in this space over the years, but I think I am seeing it now grow into an overall political dynamic throughout the West.
There are the protected and the unprotected. The protected make public policy. The unprotected live in it. The unprotected are starting to push back, powerfully.
The protected are the accomplished, the secure, the successful—those who have power or access to it. They are protected from much of the roughness of the world. More to the point, they are protected from the world they have created. Again, they make public policy and have for some time.
I want to call them the elite to load the rhetorical dice, but let’s stick with the protected.
They are figures in government, politics and media. They live in nice neighborhoods, safe ones. Their families function, their kids go to good schools, they’ve got some money. All of these things tend to isolate them, or provide buffers. Some of them—in Washington it is important officials in the executive branch or on the Hill; in Brussels, significant figures in the European Union—literally have their own security details.
Because they are protected they feel they can do pretty much anything, impose any reality. They’re insulated from many of the effects of their own decisions.
Why it’s almost as if society were divided into different hierarchically-stratified groups (if we could just come up with a better name for these types of groups that would be super helpful) that have fundamentally conflicting interests.