One of the most baffling reactions among liberals since 2016 was to compare Boris Johnson to Donald Trump. I reside in England, and saw tweet after tweet from the Max Boots and Tom Nichols of the world on why these two, and Brexit and the election of Trump, are exactly the same. The reality, as always, is a lot more complicated. There is of course similarity in both events. Both were a rebel yell against orthodoxy in the respective countries. In the United States, it was by masses of people who oppose the elites’ conventional wisdom, from mass immigration from...