Alex, that's a really difficult question to answer.

Filter #1. Newscasters are human. Their world view is formed by their upbringing, education, friends, family, colleagues, etc. It impossible for them or anybody else to be totally unbiased and objective.

Filter #2 is ourselves, with the perhaps wildly different upbringing, education, family, etc.

How could we know whether the information we receive is biased by our own filter, the newscasters, or both?

Worse, news is made when there's a compelling human interest. Turning on the water and sewage for a town is a huge deal to everybody in that town, but nobody in the USA gives a flip. But a soldier shot dead, that's a front page story, and should be. That bias is built into the news business and into our system of values and not necessarily some secret agenda of the media.

However, even newscasters, in those rare moments of honest candor, will admit to a general liberal bias. The reason liberals get their panties in a wad about Fox News is that they have a conservative bias. I don't think its any worse than the major networks' liberal biases. I usually see a wider range of opinion expressed on Fox, despite their obvious conservatism, than on the other channels.

Botnst