Rachel Maddow: Politifact 'A Zombie Eating Our National Brains' (VIDEO)

Rachel Maddow took on her arch-nemesis Politifact again on Thursday, begging the fact-checking organization to "go away" after what she saw as another egregious misstep.

Maddow has previously called Politifact a "disaster" and an "embarrassment" after the group, which rates the statements of politicans on a "Truth-O-Meter," issued rulings she found highly off-base.

In a previous show, Maddow had called Politifact "dead." On Thursday, though, she said that it "lives, after death, like a zombie, eating our national brains."

The target of Maddow's ire this time was a ruling by Politifact about an anti-abortion group's claim that the White House was screening unborn babies as part of its security process.

The director of the Visitors Office wrote a letter saying that, "Crazy as it may sound, you MUST include the baby in the overall count of guests in the tour." However, despite the protests of right-wing newspapers and pro-life groups, the rule is only intended for mothers who will be bringing newborn babies on future tours.

"When a 7-month pregnant woman is providing information for a tour that is 4 months in the future, there is a ‘place holder’ for the new baby," a Secret Service spokesman told Politifact, which said that the letter had been "wildly misconstrued."

What enraged Maddow was that Politifact rated the reports "Mostly False."

"Mostly?!" she cried. "You can get something 'wildly' wrong and still only be mostly wrong about it? What does it take to get a False rating at a Politifact?"

She closed in a similarly aggressive manner.

"Politifact, God bless you," she said. "You are not dead, but every time your trademarked Truth-o-Meter points at something, something dies in this country. Go away, Politifact."

Loading Slideshow

• Iowa Caucus Coverage

  Rachel Maddow, host of MSNBC's "Rachel Maddow Show" (center), moderated coverage of the 2012 Iowa caucus with her fellow network hosts.

• Comparing GOP Candidates From 2008 And 2012

• Mocking Herman Cain

• On Cover Of The Hollywood Reporter

• Interviewing Joe Miller Supporter

• At New Yorker Festival

• On 'Meet The Press'

• On 'Meet The Press'

• At The State Department

  Rachel Maddow attends a luncheon hosted by U.S. Secretary of State Hillary Clinton in honor of British Prime Minister David Cameron on March 14, 2012, at the State Department in Washington, D.C. (Photo by Karen Bleier/AFP/Getty Images)

• At The State Department

  Rachel Maddow arrives for a lunch in honor of Prime Minister David Cameron at the State Department on March 14, 2012, in Washington, D.C. (Photo by Brendan Hoffman/Getty Images)

• In Conversation With David Letterman

  Rachel Maddow and David Letterman discuss the headlines of the day in Emens Auditorium at Ball State University, Letterman's alma mater, on Dec. 2, 2011, in Muncie, Ind. (Photo by Ron Hoskins/Getty Images)

• In Conversation With David Letterman

  Rachel Maddow discusses the headlines of the day in Emens Auditorium at Ball State University, David Letterman's alma mater, on Dec. 2, 2011, in Muncie, Ind. (Photo by Ron Hoskins/Getty Images)

• In Conversation With David Letterman

  Rachel Maddow and David Letterman discuss the headlines of the day in Emens Auditorium at Ball State University, Letterman's alma mater, on Dec. 2, 2011, in Muncie, Ind. (Photo by Ron Hoskins/Getty Images)

• 2011 Summer TCA Tour

  MSNBC President Phil Griffin and MSNBC hosts Rachel Maddow and Lawrence O'Donnell (left to right) speak during the NBC Universal portion of the Television Critics Association's 2011 summer tour, held at the Beverly Hilton Hotel on Aug. 2, 2011, in Beverly Hills, Calif. (Photo by Frederick M. Brown/Getty Images)

• 2011 Summer TCA Press Tour

• At The White House

  MSNBC hosts Rachel Maddow (left) and Keith Olbermann (second from left) talk with White House Communications Director Anita Dunn (second from right) and Deputy Press Secretary Bill Burton (right) outside the White House on Oct. 19, 2009, in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)

• At The White House

  MSNBC hosts Rachel Maddow (left) and Keith Olbermann (second from left) talk with White House Communications Director Anita Dunn (second from right) and Deputy Press Secretary Bill Burton (right) outside the White House on Oct. 19, 2009, in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)

• Nancy Pelosi, Rachel Maddow

  House Minority Leader Leader Nancy Pelosi of Calif. accompanied by MSNBC's Rachel Maddow, participates in a conversation moderated by Maddow, in Washington, Wednesday, June 6, 2012, to talk about her experiences and achievements over 25 years in Congress. (AP Photo/Haraz N. Ghanbari)

• NAACP-Holder

  Jo Ann Wright, of Southfield, left, gets her photo taken with political commentator Rachel Maddow who was the recipient of the Ida B. Wells Freedom and Justice Award at the 57th annual NAACP Fight For Freedom Fund Dinner at Cobo Hall in Detroit Sunday May 6, 2012. U.S. Attorney General Eric Holder was the keynote speaker. (AP Photos/David Guralnick / The Detroit News)

• David Brooks, George Stephanopoulos, Rahm Emanuel, Rachel Maddow, Alex Castellanos

  Mayor Rahm Emanuel, second from left, shares a stage with George Stephanopoulos, left, David Brooks, center, Rachel Maddow and Alex Castellanos, right, during a panel discussion, "2012: The Path to the Presidency", at the University of Chicago in Chicago on Thursday, Jan. 19, 2012. (AP Photo/Nam Y. Huh)

• Rachel Maddow

  Rachel Maddow, host of "The Rachel Maddow Show" on MSNBC, shares a stage with pundits during a panel discussion, "2012: The Path to the Presidency", at the University of Chicago in Chicago on Thursday, Jan. 19, 2012. (AP Photo/Nam Y. Huh)

• Rachel Maddow, Lawrence O'Donnell, Chris Matthews

  MSNBC hosts Rachel Maddow, left, Lawrence O'Donnell, center, and Chris Matthews take part in a panel discussion at the NBC Universal summer press tour, Tuesday, Aug. 2, 2011, in Beverly Hills, Calif. (AP Photo/Chris Pizzello)

• Lawrence O'Donnell, Rachel Maddow

  Lawrence O'Donnell, right, host of the MSNBC show "The Last Word," answers a question as Rachel Maddow, host of "The Rachel Maddow Show," look on at the NBC Universal summer press tour, Tuesday, Aug. 2, 2011, in Beverly Hills, Calif. (AP Photo/Chris Pizzello)

• David Letterman In Conversation With Rachel Maddow

  MUNCIE, IN - DECEMBER 02: Rachel Maddow and David Letterman (R) discuss the headlines of the day in Emens Auditorium at Ball State University, Letterman's alma mater, on December 2, 2011 in Muncie, Indiana. (Photo by Ron Hoskins/Getty Images)

• David Letterman In Conversation With Rachel Maddow

  MUNCIE, IN - DECEMBER 02: Rachel Maddow and David Letterman (R) discuss the headlines of the day in Emens Auditorium at Ball State University, Letterman's alma mater, on December 2, 2011 in Muncie, Indiana. (Photo by Ron Hoskins/Getty Images)

• Alaska's Three Senate Candidates Debate In Anchorage

  ANCHORAGE - OCTOBER 26: Television and radio personality Rachel Maddow (R) speaks with supporters of Republican candidate Joe Miller prior to his debate with write-in candidate Sen. Lisa Murkowski (R-AK), and Democratic candidate Scott McAdams hosted by The Alaska World Affairs Council and Rotary Clubs of Anchorage at the Dena'ina Convention Center October 26, 2010 in Anchorage, Alaska. Voters will go to the polls on November 2, 2010. (Photo by Clark James Mishler/Getty Images)

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