In 2008 Sean Penn starred in a movie called Milk.  The movie is about Harvey Milk, the first openly gay man to be elected to public office in the state of California.  When Sean Penn won the Best Actor award the first words out of his mouth were, “You commie, homo loving, suns of guns!”

2. Diane Keaton

Diane Keaton is a successful actress who has been in many films such as The God Father 1, 2 and 3, The First Wives Club and the very liberal movie The Family Stone.  She is currently a contributor for Liberal/Progressive The Huffington Post.

Kermit the Frog is one of the biggest liberals in Hollywood!  He is really a tree hugging hippy and  is always complaining about how “It’s not easy being green.”

At the 2007 Emmy Awards Sally Field said, “If the mothers ruled the world, there would be no goddamn wars in the first place!”  Has she ever seen a soccer mom?  She was an advocate for Hillary Clinton in 2008.

I don’t know if I would consider Ben Affleck one of the biggest liberals in Hollywood but one day he will be.  He has loomed around presidential election since 2000, also being a supportive voice for the democratic ticket.  He may want to give politics a try because I am not sure that Hollywood thing is working out for him.