From the website: "Media Matters for America is a . . . progressive research and information center dedicated to comprehensively monitoring, analyzing, and correcting conservative misinformation in the U.S. media".
Founded at Sonoma State University in 1976 by Dr. Carl Jensen, Project Censored focuses on news media censorship in the US. Every year, Project Censored "researches, vets, and compiles the Top Twenty Five most censored and under-reported news stories in the US, and offers scholarly analysis and critiques."