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1.
Major television networks and newspapers. Most mainstream media outlets are biased right or left but pretend to be neutral. Abreviated msm
I used to watch CNN, but i got tired of mainstream media propaganda
de spantheman 20 juillet 2008
 
2.
Any broadcast, print, or online news sources that Sarah Palin disagrees with.
Any type of media that isn't run by a fringe right-wing or left-wing blogger is considered to be mainstream media.
de Publius 9237 19 septembre 2010