Atticus gave the children air rifles and with them some very important advice. What was the advice? Relate that advice and explain the significance...

When Atticus gave the children the air rifles, he gave them advice that is the source of the name of the book. He tells them that it is all right to kill blue jays, but to 

Remember that it is a sin to kill a mockingbird. Mockingbirds don't do one thing but make music for us to enjoy.

This is a theme of To Kill a Mockingbird--that creatures that do no harm and only...

When Atticus gave the children the air rifles, he gave them advice that is the source of the name of the book. He tells them that it is all right to kill blue jays, but to 

Remember that it is a sin to kill a mockingbird. Mockingbirds don't do one thing but make music for us to enjoy.

This is a theme of To Kill a Mockingbird--that creatures that do no harm and only bring good to others should be valued and cared for. There are multiple people in Harper Lee's novel who can be considered mockingbirds. Boo Radley is harassed for being different but eventually saves the children. Tom Robinson tries to help Mayella but dies for it. Atticus tries to do the right thing despite threats to himself and his family. Jem and Scout are innocent children, targeted because of their father's defense of Tom. All deserve protection, but only some receive it.