Daniel Greenfield describes them very well:
The sort of people who set off class wars as a hobby have very particular classless societies in mind. The average left-wing revolutionary is not poor. He is a homicidal dilettante from the upper classes with a burning conviction of his own importance that he is unwilling to realize through disciplined labor. His revolution climaxes with a classless society in which he is at the very top.
Not near the top, not adjacent to the top, as he usually was before, but at the very top.
Utopia has a class system. At the top are the thinkers, the philosopher kings who develop plans based on how things ought to be and then turn them over to lesser men to actually implement. They are the priestly class of an ideological movement whose deity is politics and whose priests are politicians.
In a planned economy, they are the titans of industry and finance, they are the heads of banks and the men who move millions and billions around the board, and they are utterly unfit for the job. But they also make decisions in matters of war and science. And in all things. They measure political heresy in all things and all the activities of man are measured against their dogma and rewarded or punished.
This is the way it was in the Soviet Union or Communist China. But take a closer glance at the White House and see if you don’t spot the occasional similarity.
In the middle of Utopia’s class system is the middle class. This is not the middle class you are familiar with. There are no small business owners here. No one striving to make it up the ladder. Utopia’s middle class is the bureaucracy, the interlinked hive mind of government and non-profits.
At the top of Utopia’s class system are the philosopher-planners who issue the regulations. Or rather they offer objectives. The bureaucracy filters them through successive layers, transforming grandiose ideas into stultifying regulations and each successive layers expands them into further microcosms of unnecessary detail. This expansion of regulations also expands the bureaucracy. One feeds off the other.