Michael Moore filming Roger and Me in Flint, Mich. (Handout)

The artistic community — or at least a part of it — has spoken. And they want Sen. Elizabeth Warren (D-Mass.) to run for president in 2016. "Our country needs someone who will stand up for working families and take on the Wall Street banks and special interests that broke our economy," reads an open letter from Artists for Warren — a group of musicians, actors and directors including actors Matt Bomer, Elizabeth Olsen, Mark Ruffalo, Susan Sarandon, Julia Stiles, Olivia Wilde; musicians DJ Spooky and Kim Gordon; and filmmaker Michael Moore.

Some of the celebrities who signed the letter -- perhaps not coincidentally -- also supported Democrats other than Hillary Clinton in 2008, including Susan Sarandon, who campaigned for John Edwards; Mark Ruffalo, who backed former Alaska senator Mike Gravel; Ed Norton, who made phone calls for (and a documentary about) now-President Obama; Michael Moore, who endorsed Obama; and Steve Earle, who called Clinton "dangerous" (but wasn't supportive of Obama either).

MoveOn.org, which organized Ready For Warren, did not respond to a question about whether any of the Artists for Warren previously backed Clinton in 2008.

In January, Artists for Warren held an event at the New York home of filmmaker Julie Pacino and Jennifer DeLia, according to Vanity Fair. "If she primaries and doesn't win the primary, she will at least push the conversation more toward the progressive values that we all share," Ruffalo, who played Bruce Banner/the Hulk in "Avengers," said in a video played during the event. "As my brother and sister artists, I'm asking that you join me in getting on board with asking Elizabeth Warren to run."

Here's the letter:

Artists for Warren Letter; Feb. 2, 2015 by MoveOn_org

If you can't view it, click here.

This post has been updated with information about celebrities who supported Democrats other than Hillary Clinton in 2008.