So your definition of the global elite is that they avoid tax. Other people would say that they earn over a certain amount, or that they are sneering metropolitans, or that they don't have a home country, or that they own too many houses, or that they make their money from the wrong thing. Most of those definitions would fit Donald Trump or Nigel Farage for example, but of course they are not part of the global elite for many.
That's the problem with this sort of term; it is inflated with so many contradictory meanings by so many people it becomes meaningless.
If people complain that other people earn more than them then they are just jealous. I am talking about fairness. When Warren Buffett complains that billionaires are paying less tax compared to the average Joe then you cant blame the average Joe getting angry about it.
That certainly wasn't a vote against the global elite, since by any of the definitions above (in particular your 'pay less tax' one) he is a fully-fledged member of that elite. I'm sure he'll continue to talk about how he's taking on the global elite, or the main stream media, or muslims/terrorists or whatever other convenient group he can find to deflect blame.
That's what's dangerous about terms like global elite - they lead you away from specific problems and into vicious blaming of some dehumanised other who becomes the scapegoat for all the world's ills.
That's the problem with this sort of term; it is inflated with so many contradictory meanings by so many people it becomes meaningless.