One very important theme is the existence if good and evil in a person, essentially, whether a person is good or evil. The book shows this theme, by illustrating Scout and Jem as two children who have never seen any evil, therefore picture everyone as good. Their perspective changes as they grow up, and experience more evil, do they realize that people can be evil, and are not always good.
An important symbol I had noticed when reading te book the first time, but didn't quite understand, was the mockingbird. The mockingbird symbolizes innocence, and goodness. A few characters can be identified as mockingbirds, such as Tom Robinson, and Boo Radley. The idea that a mockingbird portrays innocence, is displayed by saying multiple times that killing a mockingbird is a sin. For example, when Tom Robinson was shot, Mr. Underwood compared his death to the "senseless slaughter if songbirds" another example that portrays this idea is when at the end of the book, when Scout thinks Boo Radley is innocent, she says hurting Boo Radley would be like shooting a "mockingbird". As you can see the mockingbird symbolizes innocence.
There are many themes and symbols in the book "To kill a mockingbird" one theme is the existence if bad or good in a person, and a symbol is the mockingbird and innocence, there are many other themes and symbols in this book but I feel these two were the strongest. Reading the book a second time gave me lots of new info I hadn't noticed before.
