Media Matters – Bias and Credibility

Media Matters - Left Biased - Liberal - progressive - Democrat - CredibleFactual Reporting: High - Credible - Reliable


These media sources are moderately to strongly biased toward liberal causes through story selection and/or political affiliation.  They may utilize strong loaded words (wording that attempts to influence an audience by using appeal to emotion or stereotypes), publish misleading reports, and omit information that may damage liberal causes. Some sources in this category may be untrustworthy. See all Left Bias sources.

  • Overall, we rate Media Matters Left Biased based on selectively checking right-wing sources and High for factual reporting due to proper sourcing of information and a clean fact check record.

Detailed Report

Bias Rating: LEFT
Factual Reporting: HIGH
Country: USA
MBFC’s Country Freedom Rank: MOSTLY FREE
Media Type: Organization/Foundation
Traffic/Popularity: Medium Traffic


Founded in 2004 by journalist and political activist David Brock as a counterweight to the conservative Media Research CenterMedia Matters for America is a politically progressive media watchdog in the United States.  He founded the group with help from the Center for American Progress. The organization has a stated mission of “comprehensively monitoring, analyzing, and correcting conservative misinformation in the U.S. media.” It is known for its aggressive criticism of conservative journalists and media outlets, including its “War on Fox News.”

Read our profile on the United States government and media.

Funded by / Ownership

Media Matters is a 501(c)(3) nonprofit organization funded through donations and sponsors. According to Sourcewatch, they are funded by wealthy liberals. According to the right-leaning Influence Watch, “Media Matters was founded with $2 million in funding from wealthy progressives funneled through the Tides Foundation with additional funding from and the New Democrat Network. The left-of-center donor group known as Democracy Alliance endorsed the group in 2004, resulting in donations. In 2010, George Soros gave the group $1 million. MMA has also received substantial funding from labor unions, most notably the National Education Association (NEA).” Finally, they are affiliated with the American Bridge 21st Century Super PAC.

Analysis / Bias

In review, Media Matters frequently uses emotionally loaded words that favor the left and denigrate the right such as this: Fox News bashes Bernie Sanders and misleads viewers about his policies after his Fox town hall. This report is properly sourced to credible media outlets and direct quotes. Here is another example of an emotionally charged headline designed to favor the left: The insane, toxic Trump adulation of Jeanine Pirro. Although biased in wording, this story is again properly sourced to OpenSecrets, the New York Times, and the FEC.

On 11/20/23, a lawsuit was filed against Media Matters by X/Twitter for defamation after publishing a report on how ads for major advertisers appear next to posts with antisemitic rhetoric. Media Matters responded with this statement: “This is a frivolous lawsuit meant to bully X’s critics into silence. Media Matters stands behind its reporting and looks forward to winning in court.”

In general, Media Matters’s sole purpose is to paint the right negatively while positively reporting on the left. Typically, they use proper sources and usually keep information in context, though opinions are clearly left-biased.

Failed Fact Checks

  • None in the Last 5 years

Overall, we rate Media Matters Left Biased based on selectively checking right-wing sources and High for factual reporting due to proper sourcing of information and a clean fact check record. (5/13/2016) Updated (D. Van Zandt 11/21/2023)


Last Updated on November 21, 2023 by Media Bias Fact Check

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Left vs. Right Bias: How we rate the bias of media sources

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