Social recession by industrialization
The Hairy Ape displays oppression of the industrial working class. Despite demonstrating in The Hairy Ape O'Neill's clear belief that the capitalist system persecutes the working man, he is critical of a socialist movement that can't fulfill individual needs or solve unique problems. The industrial environment is presented as toxic and dehumanizing; the world of the rich, superficial and manipulative. Yank has also been interpreted as representative of the human condition, alienated from nature by his isolated consciousness, unable to find belonging in any social group or environment. This is a result from the industrialization of both the ship and New York.
Racial degeneration
Many critics often argued over O’Neill’s conception of race in The Hairy Ape. Yank, who often worked with coal, is said to have “blackface” through the play.[5] This interpretation of “blackface” has led to a debate about Yank’s race. The coal combined with an unshaven face has covered the whiteness of his face, discarding his nationality. These characteristics combined contribute to his physical and psychological downfall throughout the play. His emotional detriment reflects his physical deterioration as well, where finally at the end of the play he has taken on animalistic qualities. In the last scene, Yank tries to explain to the ape that they are the same; his efforts to show their similar qualities end in Yank’s death. Yank’s defeat by the ape is degenerating to his mental state as well as his race and social class.