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Microeconomics is obviously nonpartisan, because microeconomics is almost completely apolitical. The gloves come off with macro.
I mean, if you look at the history of macro, it is pretty bombastic. For while all that exists is the "classical" school (and, less relevant, the proto-Austrian). Economics is a curiosity for the elite. Then Marx suddenly calls for the pitchforks. Suddenly, things get interesting. Austrians become famous via Menger demonstrating how Marxian exploitation theory doesn't account for the subjective price of time. Of course, subjective vs. labor values are a skirmish in themselves. The major political frontline is already drawn and it is not even 1900 yet. WWI, revolutions and all that happen, and of course everybody blames Marxian macro for the Bolsheviks, right or wrong, then the Great Depression suddenly makes the Classical school distrusted. During the GD macroeconomics is redefined from a detached intellectual curiosity to a popular Save People From Unemployment Right Bleedin' Now kind of thing. Keynes steps up to it, proposing something like a Marx Light, basically proposing to save capitalism from itself based on a low aggregate demand theory that can really only happen if workers are paid far too little and is thus basically Marxian exploitation theory in different words. In the meantime, Austrians gather steam largely on Hayek's works and Mises's popularity in America (Duck Tales' Ludwig Von Drake is named after him, he was seen as the textbook eccentric professor) and Hazlitt delivers a tremendous fisking to Keynes in The Failure Of The New Economics, claiming that Keynes does not even understand the meaning of the term "function". Meanwhile, a more polite but not much less radical Neoclassical counter-attack is brewing, and in the seventies even Sweden capitulates to neo-capitalist theiry by dropping a Nobel on Hayek. Keynesians awaken from their curve-fitting 1950's slumber and actually pay attention to Neoclassical ideas, arriving at the Post-Keynesian Synthesis, but still don't expect Krugman to have much love lost for Chicago, or vice versa.
The history of macro is a lot like the history of England vs. France. If you don't mind the smell of gunpowder, it is a fascinating thing. It is bombastic. But don't expect much agreement.
"Microeconomics is obviously nonpartisan, because microeconomics is almost completely apolitical. The gloves come off with macro."
Not really
Price fixing... pigovian taxation.... sales taxes > income taxes.... zoning laws... free trade... licensing regulations... immigration.... lots of political issues where economists agree on a great deal because of microecon
Krugman and Delong are much more combative than the typical economist. You'll get a very skewed picture if you only read Krugman and the people Krugman links to. He's in the public eye so that tends to have, I think, a very negative impact on his popular writing.