Even when they report what is called hard news just the facts of where, what, when, how, who they get details wrong more frequently than people realize. Yet hard news is considerably more reliable that soft news, which is all the filler, background, polls, and opinion stuff. Particularly on TV news (both cable and the national and local broadcasts), content consists of perhaps 5% hard news and 95% filler.
Yet most people consume the filler uncritically, as though it were factual, when the bulk of it is agenda-driven opinion and spin. Hidden agendas do not always have to be political, by the way. The overriding agenda of all purveyors of news product, whether print or broadcast, is to beat the competition and make money. In today's heavily niche-oriented market, some skew Left, some skew Right, some skew toward low-brow gossip, others toward high-brow "information," and so on.
Purveyors of news product are no different from purveyors of other types of product, except in one crucial way. They are the filter through which the general public is informed (well or poorly; mostly poorly) of public policy issues. It is largely the broadcast news media that:
This is why, whenever I have the opportunity, I caution people to be highly skeptical of ANYTHING in the news other than hard facts. Make your own judgments based on multiple corroborative sources of information. And even then, give a story time to unfold fully before jumping to the conclusion the media seems intent on making you draw.