Shades of red,
My old friend Bertel Olman used to define radical marxist and liberal in the following way... most likely still does, I should drop in on him...
Liberal... has noticed one or two social problems, like save the whales, which if done, evil would be erradicated and the world perfect.
The radical knows that if you took all the liberal observations and rants and lumped them together, you would have a pretty good polical plan and the problem underlieing all these problems is something or other to do with the evils of capitolism.
The marxist knows the other two are generally right, but has the intelectual tools to understand why they are right and that we will likely never live in a Eutopia, but just envent better problems.
Best to all
Larry