The Tea Party is often accused of being "Astroturf" in that their accusers don't accept that people can be upset with the way Democrats are trying to ruin the country. As a response, the Daly show and Comedy Central have decided to hold a "Rally to Restore Sanity" as an antidote to Glenn Beck. But because this is being manufactured by a commercial enterprise they are attempting to limit who can make a video recording. It's true that you wouldn't be able to record the show with your own camera while sitting in the audience and then sell it outside, but this is being held on the National Mall.
Maybe there is something to this whole corporate profits over getting the message out.