The paradox of the skeleton
The fact that a skeleton can lie below the house's floor for over a hundred years without detection is paradoxical. Similarly, it is ironic that the skeleton was linked to a violent white man who violently killed the black people. Consequently, life is sardonic because even those who kill others do not live forever. The skeleton remains are powerless and can do nothing to the living. Therefore, the feeling of superiority is temporary because no one lives forever.
The satire of racism
Rowan is facing similar challenges that William went through about a hundred ago. William was discriminated against because of his ethnic background. In the modern-day, Rowan is of a mixed-race ethnicity, and she faces racism. Therefore, it is ironic that even after hundred years of campaigns against racism, still, the people of color face bigotry and do not have equal privileges as their white counterparts.
The irony of Arvin’s death
Arvin’s death is ironic because his heroic character is thrashed away when he is pushed to death. When Rowan gets into an accident, Arvin, who is black, arrives quickly to rescue her. The white man intentionally pushes Arvin against a moving vehicle which knocks him and kills him instantly. The culprit is later set free because he is white, and it is assumed that Arvin is the one who was in the wrong.
The satire of the police
The police are supposed to serve all people equally because that is their mandate. Ironically, the white policemen treat blacks with contempt. The appearance of a black man in any street raises suspicion. As a result, black people are scared of their safety because the same police supposed to protect them are the first people who mistreat them.