News, Newspapers, Websites, Radio, TV, and organizations that convey information the public.
There's "facts" that people believe, but aren't. Worse are things that the Fact Checkers on the left have verified for people as true, that aren't true, or are completely biased or misleading. Those are things the herd followers believe because they got their dose of confirmation bias from their partisan sources, and so will argue to death using an appeal to authority fallacy, while anyone who cares about the truth can show how it is wrong.
Starting a section on MSNBC and their bias is like starting one on listing all the names in the Holocaust. This is a Sisyphusian task to try to create a comprehensive list -- so I won't do that. Heck, it'd be impossible to list all the failures of any on of their personalities alone (Ed Shultz, Chris Matthews, Tom Brokaw, Mika, Maddow, and the other Hurricane Katrina's of journalistic ethics). So I'll just cherry pick, and offer a few nuggets, links to aggregate sources, greatest misses, and things that can point out the obvious to those capable of getting it.
Media Matters: the big lie -- it's a hit list for David Brock's political enemies, masquerading as a 501c.
They are violating the law by existing.
They threw a hit piece on Tucker Carlson over comments made on a Shock Jock radio show, that frankly, don't seem that bad... just stuff that would offend snowflakes (even with all the context stripped out). But it turns out their own comments are worse. https://www.dailywire.com/news/44602/leftist-who-initiated-boycott-tucker-past-comments-hank-berrien
David Remnick took over as Editor and they became the cheap partisan low-quality mock-worthy rag that they are today. This details just a small portion of that.
Politico started when left-of-center John F. Harris, and the slightly less left-of-center Jim VandeHei (who left to found Axios in disgust, and penned a FU I'm outta here letter), got funding for a DC tabloid journalism (rumor mongering) on the DC set. Sort of what HuffingtonPost was to Hollywood, but only for DC, if HuffPo had even lower ethical and journalistic standards. The point isn't that I dislike Politico -- its looser quality controls allows for some people to get a voice that they wouldn't have elsewhere. So to me, it's like reddit or twitchy -- sure most articles are full of shit, but they allow both sides turds, and you can find some treasures in the sewage, if you are willing to wade long enough.
Rolling Stone is an American monthly magazine that was founding in the late 60's San Francisco, and focused on music and pop-culture. But like many in entertainment, they forgot their goal is to entertain, become full of themselves and try to be more "relevant" -- and since that's not their core competency, they usually screw it up. Which is a shame, because we need shallow tripe and escapism, without SJW's trying to take everything over and make it important. Especially when they have a history of being not very good at their core competency (covering the music scene).
Skeptical Science is a FakeScience site created by not-a-scientists John Cook. It seems like his name is missing an 'r' somewhere. He created his site not to inform people, but to misinform them. You can tell by things he does on it: like omitting facts that he finds inconvenient, or censoring famous Climate Scientists that he disagrees with. It's fine that he has an advocacy site -- it's wrong that he plays it off as a Science site. Science is always about facts and skepticism.
Time Magazine was once a respected publication, but like all things: liberals ruined it. Once they took over, they destroyed "journalism" and replaced it with propaganda. So while good articles occasionally get through their editorial bias, it's strictly by accident, and usually not touching anything vaguely political.