The quote refers back to what Scout and Jem were told when they got air rifles for Christmas, not to shoot a mockingbird. A mockingbird doesn't do anything but sing many bird songs and harms no one. It isn't a predator or harmful to anyone. Tom Robinson and Boo Radley were symbolic of mockingbirds. Both men did nothing to harm anyone and were friendly to those in need. Boo was rumored to have stabbed his father in the leg with scissors in his younger years. Since then, he has done no harm, merely helped the children the night of the fire and given them little presents in the knothole. Tom was the only human being who was pleasant and helpful to Mayella Ewell. Their kindliness and helpfulness without expectations of return made them the mockingbirds of Maycomb.
She means that jailing Boo for killing Bob Ewell will be like killing a mockingbird because Boo was simply saving the two children Jem and Scout.
The quote "To Kill A Mockingbird" is deep and used enough by the major characters of this book, it became the name of the book. In many wonderful stories including but not limited to: "That Was Then and This Is Now," "Just Listen" "The Truth About Forever" and "Dreamland" these authors use the titles many times.
Scout says this kind of ironically; Atticus has said this before, so has Miss Maudie. But, when Scout says it, a man and Atticus are before her. The Man, a police Cop if I remeber correctly is asking her to change her story to say that Boo did kill Bob Ewell. But, she knows that would be framing Boo because he isn't like his neighbors. So, when Scout is saying "well, it'd be sort of like shootin' a mockingbird , wouldn't it?" She's talking about how turning in Boo because he is different is like judging someone because they are different, or as Harper Lee writes "To Kill A Mockingbird..."
u still dont get what i am trying to ask , i am trying to ask like when she says that what will be like killing a mocking bird?