I am a huge advocate of open partisanship. That forces each individual consumer of inforation to hink for himself, and/or carry on reasoned dialogue and analysis with friends and neighbors. That will make for a stronger society, because it will have more independent individuals.
So, while the print press, Net and cable can fracture and segment along political lines, users of public resources have a basic obiligation of at least pretending to be fair.
There was a very good dissertation on this topic awhile back on FR ie why broascast media should not enjoy unlimited 1st Ammendment rights. If someone has the link, please post.
It's the "open" part that's missing. That's you point, isn't it?