This is the natural consequence of the media being ridiculously biased. Once the lack of trust was created by their partisanship this was almost inevitable. And honestly the media deserves it, they made this mess. Journalists wanted to be news creators instead of news reporters. It is fine to be partisan but you need to announce it, embrace it and let your audience know. Up until memo-gate very few people realized Dan Rather was a crazy leftist. That's a problem.
One of the frustrating but possibly positive end result outcomes from Trump is his 'always strike back' approach. I thought it was absolutely idiotic during the campaign but I'm starting to see the pluses. If the media takes an unfair swing at Trump (or if we are honest even a fair swing), he'll punch back. And not always 'at the media' but call people out by name. If a media figure who tries to presents themselves as objective gets into a partisan slugging match with Trump they'll be stamped forever as having a liberal bias and lose half the country as a potential audience.