Indeed, not one of them has ever apologized for providing intellectual support for some of the worst mass murderers in world history – Stalin, Mao, Castro, and the rest of the communist/socialist gangsters.  Instead, they reinvented themselves in several different ways, including posing as "environmentalists," and as "cultural Marxists."

Taking their cue from socialist economist Robert Heilbroner in a September 10, 1990 New Yorker article entitled "After Communism," many Marxists began promoting socialist central planning of the economy and of society as a whole (a.k.a. totalitarianism) in the name of "saving the planet" from capitalism.  The old Marxism was sold in the name of "the people"; the new Marxism said "to hell with people, we're for the ants, the lizards, snakes, rocks, trees, etc. – Mother Earth.  People Schmeople.  Hence the "watermelons" were born:  green on the outside, red on the inside.

The cultural Marxists take a different approach.  They replaced the Marxist theory of class confict between the capitalist "class" and the working class with a new set of classes.