I came across a piece by (the younger, still living) Galbraith the other day. It opened with a Krugman quote that was talking about how some economists had been sounding warnings early in the decade but were largely ignored. Galbraith goes on to criticize him for leaving these economists nameless, pointing out that since they correctly predicted a rather significant crisis, maybe we should know who they are and pay some attention to their thoughts. Anyway, #1 on Galbraith's list were Marxists (a few in particular). His comments had a somewhat dismissive quality, but Marxists made the list were mentioned first.