It's an academic question because it already IS biased. For example, in an interesting take on how two wrongs don't make a right The Herald newspaper boasts a 'Rangers Reporter' and a 'Celtic Reporter', and the rest of us can lump it.
Your dissertation should carry a central theme on how with very few exceptions all contemporary media prioritises reader views and clicks, listener numbers and ensuing advertising-driven revenues over providing balanced, informative content. With Radio Clyde in a league of its own.