Communists, pure and simple.
This is also what I believe. You never hear anything about abolition of the State from these "anarchists."
Of course, classical anarchism opposes the State secondarily. Its primary opposition is to private property, and regards the State as the creation of private property and the lesser evil. For this reason (as another FReeper has pointed out) anarchists have always been happy to cooperate with totalitarian Marxists because private property is enemy number one to them. Then after the revolution they get lined against the wall by their allies and shot. But they never seem to learn.
Exactly, it’s like the libertopians who wouldn’t mind tyranny if drugs and perversion were legal.