ACLU response to 1997 censorship hearings in Oklahoma.  Relevant portion includes:

"There is nothing prurient about The Tin Drum," Bertin said. "If the child pornography laws can be applied to The Tin Drum, then Lolita is off limits too, along with pictures of some fertility rites in other cultures, pictures of ancient Greek vases, and some paintings by the renowned artist Balthus. The First Amendment requires room for works of serious artistic, historical, or educational merit, even if they involve sexually suggestive imagery involving minors. The child pornography laws are intended to prevent sexual abuse of children, not to stifle artistic expression or rewrite history."