I agree completely with this thesis.

It's absolutely impossible to write without bias. If nothing else, you must choose an order in which to present the information, and that necessarily forces you to give preference to some things over others. But of course it runs much deeper than that, to assumptions the writer is making that he may not even be aware of.

I think that a journalist would be doing his readers a good service by allowing them to know his feelings, so that the reader could be better prepared to identify any biases, accidental or otherwise.