It's also reasonably neutral from bachmeier's point of view (he implied that reporting all of the news would be neutral). If you don't think reality is neutral, then I don't think we can have a productive conversation.

If you do think reality is neutral, then the neutrality of a source can be measured in the degree to which it distorts the view of reality it presents. It is political in the degree to which it intentionally distorts reality towards or away from some policy goal.