I was at Clingman's Dome in the Great Smoky Mountains National Park today. There is a sign proclaiming the area as a "First Amendment-Free Speech zone" and further citing a regulation (I believe it was CPR-2, but not certain)establishing this right. Why was it necessary for the National Park Service to post this? Has there been a challenge to free speech in national parks that I missed somehow?
No one was making any public comments there today, but I puzzled as I stood there in gorgeous sunshine as to exactly what had happened there (or in some other park) to cause the public posting of the right to speak freely on public lands.
I'm sure there are dKos experts out there who can answer my question.
Have at it!