The Media should really listen to Jim Lehrer here (last two min of this video : https://www.youtube.com/watch?v=DiYohKps70M) if they want to regain credibility with the people . There is a reason PBS is significantly more trusted than Cable News , and the reasons Lehrer outlined in the last two minutes of that video are why.
Action speaks louder than words.
When it comes to obtaining objective information, PBS is a better source than FOX or MSNBC but at the end of the day, viewers want to be entertained. They go to news that tell them what they want to hear.
Not that I think the public's distrust in media is unfounded, but their eroding credibility could be much more due to electorate's greater polarization and partisanship. When has cable news not ever been biased?