[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/06/16/art.letterman0616.gi.jpg caption="David Letterman faces a protest rally outside of his Ed Sullivan Theater despite having apologized for a self-admittedly 'coarse' joke."]NEW YORK (CNN) - Despite an apology Monday night from David Letterman, a protest rally outside of Letterman's Ed Sullivan Theater in New York will still go on as planned Tuesday, according to its organizer.
Political documentarian and conservative radio talk show host, John Ziegler, tells CNN that the point of the rally is to, "Raise awareness and get some sort of accountability."
He says that Letterman's apology, "Would have been fine had it come six days ago. This apology came seven days after the fact and his first apology was completely self serving." He added, "We think our voices should still be heard."
The protest is scheduled to take place as Letterman begins taping Tuesday's program. The group is angry over a joke the talk show host told related to the family of Sarah Palin.
Ziegler could not confirm how many of the more than 2,000 people he originally indicated would be attending had canceled. The rally's page on Facebook has approximately 200 confirmed guests. 1,383 have declined the invitation since the Letterman apology.
A significant number of the people who are attending list their residence as out of state.
Ziegler, who produced "Media Malpractice: How Obama Got Elected and Palin was Targeted" is also promoting his upcoming film, "Blocking the Path to 9/11."