Finally, Martin Sandbu has a great discussion of what
constitutes populism on FT Free Lunch: anti-globalism, nationalism and nativism, economic policy based on state activism, and anti-rule-based policy making. One can clearly see from this categorization that this goes beyond the old left-right classification.
The behavior (read: tweeting) of the president-elect of the U.S. certainly fits this characterization perfectly. And looking back into history (and that is now purely my reading) one notes parallels to the corporatists/fascist policy approach as practiced
in Italy, Spain, Portugal and some Latin American countries…