The Mockingbird Theme
To Kill a MockingbirdThe central metaphor of the mockingbird as a symbol of innocence that should be protected, not harmed.
increasing
Bearing strength in each event
decreasing
The Rule Introduced

The Rule Introduced
Atticus's Words
Atticus tells Jem that it's a sin to kill a mockingbird. This is the first time the children hear the phrase.
Miss Maudie's Explanation
Scout asks Miss Maudie, who explains that mockingbirds do nothing but sing; they don't harm anyone. They are innocent.
The Lesson
The children learn that some creatures are pure and should be protected. The rule becomes a moral touchstone.
Tom Robinson as Mockingbird

Tom Robinson as Mockingbird
The Innocent Man
Tom Robinson is a gentle man who helped Mayella Ewell out of pity. He is innocent of the crime.
The Destruction
Despite his innocence, he is convicted and killed. He is a mockingbird destroyed by the town's prejudice.
The Symbolism
Tom's fate embodies the mockingbird theme. He is harmless, yet he is destroyed. The children see the injustice.
Boo Radley as Mockingbird

Boo Radley as Mockingbird
The Innocent Recluse
Boo Radley is a harmless man who has been isolated by his family. He is a victim of cruelty.
The Protection
He saves the children and kills Bob Ewell. The law would want to prosecute him, but Atticus says it would be like killing a mockingbird.
The Final Application
Scout says that hurting Boo would be a sin. She fully understands the metaphor. The mockingbird theme is fulfilled.
when the children receive air rifles
during the trial
after the attack