"It is a sin to kill a mockingbird" in other words, picking on people who are helpless and don't do harm is a terrible thing. In the novel it is referencing, Boo Radely and Tom Robinson. Also represents the racial injustice in the South.
Book: they seem to be taking place in a town around the 1700's
movie: takes place around 1950's
Both: someone gets stoned (not get high lol but gets rocks thrown at them)
Answer:
The third passage due to its anecdotal evidence
Explanation: