I believe it was because of the raw violence and just oddity that was seen in the book, back then it was not common to go see a movie that had so much killing, much less read a book where you get chosen and stoned to death. That age was a little more innocent. Hope this helps.
Answer:
animal testing should be illegal
Answer: Sad and/or upset
Explanation:
This person seems like it is very sad therefore it gives it the sad and upset tone.