Liberal media bias is a bullshit article of faith not representative of the real world. It's evergreen because it's fake.
A survey conducted by the liberal media watchdog group Fairness and Accuracy in Reporting, which focused on the first two weeks of February 2003, found that of 393 people interviewed on-camera for network news reports about the war, just 17 percent of them expressed skepticism about the looming invasion. This at a time when polling showed that approximately 50 percent of Americans had doubts about the planned war. And according to figures from media analyst Andrew Tyndall, of the 414 Iraq stories broadcast on NBC, ABC, and CBS from September 2002 until February 2003, almost all the stories could be traced back to sources from the White House, the Pentagon, or the State Department. Just 8 percent of the television news reports were of independent origin.The fundamental source of existential danger to the American republic is the hardy ability of a large portion of the population to believe obvious lies.