Many people call the faction that's causing so much trouble in the U.S. the "Bush/Clinton Cabal". They are working together.
But, the original meaning of demagogue is "politician for the people". The elite added the negative connotations. And, Hillary's people are arousing the emotions, passions, and prejudices of the people by calling Trump a racist, a sexist, and a Russia-lover (pointing to old fears of "commies" taking over the world).
The "wall" is not a new thing. It's already being built:
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And, in Trumps speeches, he doesn't describe everything as a "threat". He wants to curb illegal immigrants, not let Muslims from war torn countries in without serious vetting, and is very willing to work with other countries (like Russia). If you look around, you'll find that the anti-Trump activists are much more hateful than the Trump supporters.