Media Matters for America

Media Matters for America (MMfA) is a politically progressive media watchdog in the United States. The organization has a stated mission of "comprehensively monitoring, analyzing, and correcting conservative misinformation in the U.S. media". Set up as a tax-exempt, nonprofit organization, MMfA was founded in 2004 by journalist and political activist David Brock as a counterweight to the conservative Media Research Center. It is known for its aggressive criticism of conservative journalists and media outlets, including its "War on Fox News."