Interesting individual that Caleb T. Maupin.
Caleb Maupin
From RT news and occupy wallstreet, among other events in his life.
Perhaps in a troublesome sort of way.
KeyWiki quotes him:
"Trump is the classic fascist billionaire, a type who ought to be familiar to everyone from the catastrophic experience between the two world wars of the last century. He uses Gestapo tactics at his rallies, inciting his goons from the podium to beat up protesters."
Perhaps his Amazon "ban" is intended to spur interest in his book?
He appears to be a classic antisemite. Whoops! Sorry. He prefers the title “antizionist.”
First-page search results tell me not to trust this crackpot on any topic whatsoever.
That does not justify the removal of his book, however.