In the book The Bluest Eye Pecola becomes impregnated by her father Cholly. She has been abused and victimized by him and raped by him. The irony is that the community does not identify her as being the victim. They talk badly about Pecola. They mock her. She is a helpless child, but no one helps her. Through her pregnancy one sees that the tight knit black community has abandoned Pecola. Yet, the group is there for the protection and acceptance of others.
Fredia and Claudia wait to see if anyone in the community will show poor Pecola compassion and help, but they are judgemental of her. She is a good source of gossip. Pecola's victimization and her desire to be clean and good she evidences as being white. She ends up losing her mind.
One thing that's ironic in The Bluest Eye is the the term of being ruined. In the novel, the prostitutes are the ruined ones. The neighbors talk about them saying that they are ruined and have no reason to be living; however, characters are even more ruined than they show out to be. The prostitutes in the book are independent and care-free while the Polly is barely hanging on to life. She is dependent on her job not because of the pay but because that is the only thing that keeps her sane and happy.
On another note, the rape of Pecola is another ironic part. Cholly, when he was young, was embarrassed when he was forced to do a sexual act by two white men. The act of him raping his daughter is tied back to that moment because he embarrasses Pecola and forces the act on her.