On the other end, how about: A. The mainstream media, M, is biased and sometimes delivers incomplete or inaccurate information. They tell $mainstream_story. B

On the other end, how about: A. The mainstream media, M, is biased and sometimes delivers incomplete or inaccurate information. They tell $mainstream_story. B. Alternative source, A, rejects $mainstream_story and says that actually, $alternative_story is the truth. C. Any data M points to to debunk $alternative_story and support $mainstream_story is assumed to be fake or manipulated, because M lies. D. There is no need to apply the same skepticism to A and their arguments, because by going against M, they have already demonstrated that they are "good guys".