That the news media were biased in the 2008 presidential election is now acknowledged by fair-minded people, left or right
As Time Magazine's Mark Halperin said this weekend at a Politico/USC Conference on the 2008 election: "It's the most disgusting failure of people in our business. … It was extreme bias, extreme pro-Obama coverage."
Given how obvious this bias is, the question is not whether liberals in the media tend to offer biased reporting. The question is why? Why can't liberal news people report the news without any slant?
The answer is that for people on the left, all I repeat, all professions are a means to an end, not ends in themselves. That end is the social transformation of society, meaning the promoting of "social justice" as the left understands that term.
For most liberal news reporters, therefore, the purpose of news reporting is not to report news as objectively as possible. The purpose of the media in general and of reporting specifically is to promote social justice and the social transformation of society.
For most liberal judges, the primary purpose of being a judge is to promote social justice and transform society. That is why liberal judges are so much more likely to be judicial activists than conservative judges. Most liberal judges do not see their roles as merely adjudicating a dispute according to the law. They see their role primarily as using the law and their power to rule on the law to promote social justice.
For most university professors and many high school teachers, as well outside of the natural sciences and math, the same holds true. The task of a teacher is to teach, i.e., to convey the most important information as honestly as possible. But, again, this conflicts with the social justice goal of the left. History teachers who merely teach history are of little use to the left. History and English and political science, and sociology and other liberal arts teachers must use their classroom to produce young people who will wish to engage in society-transforming work for social justice.
For most liberals in the arts (there are very few conservatives in the arts) there is no denial of their having an agenda. They state quite candidly that the purpose of the arts is to challenge the (conservative) status quo, to raise political and social consciousness by advancing a "progressive" political and social agenda. The artist whose agenda is merely to produce beautiful art is looked upon as a reactionary buffoon, and is not likely to be taken seriously no matter how talented in the worlds of music, dance, painting, and sculpture.
Even the natural sciences are increasingly subject to being rendered a means to a "progressive" end. There was the pseudo-threat of heterosexual AIDS in America science manipulated in order to de-stigmatize AIDS as primarily a gay man's disease and to increase funding for AIDS research. There are the exaggerated secondhand smoke data popularized so as to decrease smoking and fight "Big Tobacco." And now we have the scientifically questionable belief in man-made carbon emissions causing global warming leading to natural catastrophe and recommended "solutions" many of which, if adopted, will serve the goal of undermining corporate capitalism.
The best analogy of the directing of all human endeavors toward a left-wing purpose would be those early medieval centuries of European life when just about everything man made was supposed to reflect a religious consciousness. Virtually nothing stood apart from the Church. The arts were religious, the sciences were handmaidens of theology, and schools were religious in nature.
Most moderns look upon that period as a dark age perhaps a bit unfairly at times. But the people who most scorn what they deem the religious "Dark Ages" are trying to building a secular-left dark age in our time. Because the left is a religion, a substitute for the Christianity it seeks to displace.