Innocence is extreme in Tender is the Night, a story where phrases like "lost innocence" and "the end of innocence" strongly apply. On the other hand, even the most jaded characters hold out a little innocent hope that things will somehow get better. And occasionally they do, in moments where innocence is perhaps regained in safe environments where it can flourish. Nature is one such environment. The innocence of nature is held up throughout the novel as the antidote to innocence lost.
The crowd in the Roman courtroom that mistakes Dick for a child rapist represents all Dick’s worst fears about himself – they also represent his sense of lost innocence.