To bring home the point of the last post we should emphasize the way that discussion sidetracks into Marx’s theories. Ane this need to drop the discussion of those theories.
If you are defending leftist activism and confronted with Marx’s theories, don’t fall for the bait. Point out that he was a classical economist, that a lot of his work is thus based on Smithian foundations. Point out that economics moved on from its neo-classical phase and that Marx never addressed that. You need to be ready on that score. And not revert to bringing in Marx. If you follow that strategy you put the burden on the economist of capitalism, and the case for the problem with his theories is overwhelming. That’s why the badge of ‘marxist’ is pegged so easily on critics who are put on the defensive.