From this -the reader can tell that she has fully matured and has finally understood the importance of protecting those who are innocent.She also discovers how the law can be bent at times when necessary.
This has been done to show that there is still hope for people to change in their town.
There are many examples of mockingbirds in this story who are misunderstood and Harper Lee raises the awareness of how a tired old town so set in its ways can all be obliged to carry prejudice views on innocent people.
This is important as it took longer for slavery to be abolished in the South and even when it eventually was, racism was still embedded in society.
The title of To Kill a Mockingbird has a literal link to the plot the mockingbird is one of the key themes in the novel.
Mr Heck Tate realises that Boo is a mockingbird as he wants to protect him after Bob Ewells death.
Mr Tate understands the principal of mockingbirds and demonstrates this when he says, To my way of thinkin, Mr Finch, taking one man whos done you and this town a great service an draggin him with his shy ways into the limelight- to me thats a sin it shows that he is prepared to forget about the crime Boo had committed as he knows that Boo had good intentions and is innocent.
Moreover it relates back to the theme which amplifies the unfairness of the killing even further.
Within this description of Toms death Harper Lee uses the technique of sibilance to enhance the harshness of Tom Robinsons death.
Harper Lee firstly introduces the principal of mockingbirds through Atticus when he says, Shoot all the bluejays you want, if you can hitem, but remember its a sin to kill a mockingbird.
The metaphorical meaning at first is ambiguous to Scout and the reader.