John Dean, does a good job of interpreting, the published research of Bob Altermeyer.
I myself have studied the work of Bob, I also understand that when a “critical mass”, of these individuals, Double-Highs get in positions of power in a government it is disastrous, and it only takes a few. This has happened in the United States, and can get much more worse if allowed to.
How America wound up involved in a war with Iraq, is a good example of the work of Double Highs.
I am currently reading “The Destruction of the European Jews” by Raul Hilberg. The way that the mass murders were carried out or planed is an example of Double Highs at work.
These people all thought alike and the plan came to them with out them drawing a particular one up.
They all formed a posse, and rounded up the Jews and killed them, an extremely large posse.
Posses without Sheriffs, in the past would single out a suspected Black man and hang him in the Southern United States, and even before that, this was done all over the United States with people, of all colors as the victim.
The Posses would have one or two Double Highs and lots of high authoritarians.