It is not that the mainstream media is liberally biased it is just that reality has a liberal bias. For example when the mainstream discusses evolution it presents information on it that reflects the best scientific knowledge available on the subject supported by peer review. read more
No, CNN is not the result of a liberal news agenda. But it does embody the current position of news networks, desperate to appeal to viewers. Sensationalized news and rating booster news programs have made enormous news groups like CNN slaves to the viewers. read more
While Democrats on average tended to have more positive coverage, the trend was skewed by particularly positive coverage of Obama." The conservative-leaning groups Accuracy in Media and Media Research Center (MRC) have claimed that CNN's reporting contains liberal editorializing within news stories as well as omission of important facts. read more