http://www.snopes.com/language/document/carlin.htm
From your link:
This essay appeared in the FreeRepublic.com on-line forum back in September 2000 under the title "I Am a Bad Republican" (picking up title changes and additions since then as it was forwarded around the Internet), and the person who posted it there has taken credit for it in a recent message in that same forum.What is false?