Due to Heathcliff's status in society – or lack thereof until the appearance of the mystery dough – he's often a scapegoat of Marxist critiques. Read up on more than the moors in "Wuthering Heights as Socio-Economic Novel," a literary essay.
"Catherine's death inverts the common standards of bourgeois morality and so has "revolutionary force." Heathcliff is morally ruthless with his brutal analysis of the significance of Catherine's choosing Edgar and her rejecting the finer humanity he represents. Despite Heathcliff's implacable revenge, we continue to sympathize with him because he is using the weapons and values (arranged marriages, accumulating money, and expropriating property) of Victorian society against those with power; his ruthlessness strips them of any romantic veneer."