Small sidebar quibble. Bias is not bad - it's prejudicethat's the real enemy of reason and thus humankind (ie judging before or despite the data). Bias simply says one leans towards a particular position - and that leaning can be very strong without compromising journalistic integrity. So often the issue is not facts themselves, but the interpretation of facts, ie their relative weighting and the implications for policy and human action. For example, the Guardianis a great newspaper, with excellent journalism, but it is also strongly biased towards socialist/Left/progressivist viewpoints and policy (with which I happen to strongly disagree for the most part).
What I'm really trying to say is that a biased journalist can also be a good one. Indeed, anyone interested in truth expects a journalist or anyone else to have certain strong biases, such as to the truth wherever it might lead, for a start. There is a lot of legitimate scope in interpreting the significance and implications of data. There are a lot of assumptions that go into calling something a "fact", and sometimes those assumptions need to be exposed so they can be debated.