On the LibraryLaw blog: Child pornography is NOT free speech:
Excerpt (and do read the comments):
“Critical point for all libraries: Child pornography is NOT protected free speech. If you see someone looking at child porn in the library, call the police.
If you see only the website and no patron, you can still report it to the FBI or Cyber Tip Line 800-843-5678
Here’s a point where pro-filter and pro-open access folks can agree.” (full post)