What especially disturbing memory involving elephants does the Giver give Jonas.?

One day, The Giver gives Jonas the disturbing memory of several men killing an elephant with guns and of the anguished mourning of another elephant that found the first animal's corpse. After he returns home, feeling weighted with his knowledge, he tries to tell Lily about live elephants that resembled her comfort object, but she does not believe him and wriggles away from his subtle attempt to transmit the memory of the elephant to her.