Bangladesh, Nov. 7 -- A generation ago, there was a political grouping called “Atari Democrats,” the most prominent of whom was the late Massachusetts Senator Paul Tsongas, who favored high tech and, if not actively pro-business, were at least not anti-business. Needless to say, that wing of the party is now extinct. Today we have the “Qatari Republicans,” most notably Tucker Carlson, Candace Owens, Megyn Kelly, and Steve Bannon, who likewise deviate from the mainstream of their party insofar as they share the leftist/Islamist hatred of Israel, and more broadly anti-Semitism. Just two years ago, Carlson was a conventional pro-Israel anti-terrorism conservative. What happened to produce this change?

One theory that...