Answer: It's ironic because it's irony, and there's an iron in the image.
Tom Robinson is accused of raping and attaching Mayella Ewell, and Atticus is consequently appointed as Tom's defense attorney for the duration of the court proceedings.
Atticus reveals that the case involves the Ewells. His plan is to shock the jury. Near the end of the chapter, Atticus refers to the ingrained racism among the residents of Maycomb.
BTW Best Book Ever
Hope This Helps! Have A Nice Day!!
