In my opinion, macroeconomics has lost its way. The kind of models that many people use—general equilibrium models—start from assumptions of perfect competition, omniscient consumers, and various like things which give rise to an efficient economy. As far as I know, there has never been an economy that actually looked like that—it’s an intellectual construct. But many people claim that the outcomes of that economy are natural outcomes. When you say “natural,” you already have an emotionally laden term. Deviations from the “natural”—say, like, minimum wage laws, or unions, or governments that give food stamps, or earned income tax credits—are interferences with the natural order and are therefore “unnatural.”
A parallel notion within the field is that our goal as economists is to maximize efficiency; we should leave all the other things to other people. Now, when you take the theory of efficiency, it turns out that there are an infinite number of efficient equilibria, each corresponding to a different distribution of income. Equity and efficiency are different kinds of things.