- Singer Willie Nelson
- Noam Chomsky, linguistic pioneer and activist author
- Bill Maher, HBO
- Ralph Nader, consumer activist and presidential candidate
- Keith Olbermann, MSNBC Countdown host
- Cindy Sheehan, activist and Congressional candidate
- Gore Vidal, author
- Neil Young, singer-songwriter, Let's Impeach the President
- Barbara Streisand, singer
- Peggy Seeger, folk singer-songwriter
- Howard Zinn, professor, author of People's History of the United States; "Impeachment by the People"
- Ed Asner, Actor
- George Washington, pen name of author who has received death threats
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