A fine example of why we SHOULD NOT trust much of our major media:

because they're bigots and manipulate the 'news' to suit their own views.
Others went further. According to records obtained by The Daily Caller, at several points during the 2008 presidential campaign a group of liberal journalists took radical steps to protect their favored candidate. Employees of news organizations including Time, Politico, the Huffington Post, the Baltimore Sun, the Guardian, Salon and the New Republic participated in outpourings of anger over how Obama had been treated in the media, and in some cases plotted to fix the damage.

In one instance, Spencer Ackerman of the Washington Independent urged his colleagues to deflect attention from Obama’s relationship with Wright by changing the subject. Pick one of Obama’s conservative critics, Ackerman wrote, “Fred Barnes, Karl Rove, who cares — and call them racists.”
...
Thomas Schaller, a columnist for the Baltimore Sun as well as a political science professor, upped the ante from there. In a post with the subject header, “why don’t we use the power of this list to do something about the debate?” Schaller proposed coordinating a “smart statement expressing disgust” at the questions Gibson and Stephanopoulos had posed to Obama.

“It would create quite a stir, I bet, and be a warning against future behavior of the sort,” Schaller wrote.

Tomasky approved. “YES. A thousand times yes,” he exclaimed.
...
Jeremiah Wright was back in the news after making a series of media appearances. At the National Press Club, Wright claimed Obama had only repudiated his beliefs for “political reasons.” Wright also reiterated his charge that the U.S. federal government had created AIDS as a means of committing genocide against African Americans.

It was another crisis, and members of Journolist again rose to help Obama.

Chris Hayes of the Nation posted on April 29, 2008, urging his colleagues to ignore Wright. Hayes directed his message to “particularly those in the ostensible mainstream media” who were members of the list.

And take real note of this piece of crap:
Michael Tomasky, a writer for the Guardian, also tried to rally his fellow members of Journolist: “Listen folks–in my opinion, we all have to do what we can to kill ABC and this idiocy in whatever venues we have. This isn’t about defending Obama. This is about how the [mainstream media] kills any chance of discourse that actually serves the people.”
Got that? Somebody actually had the nerve to ask Obama questions about Wright, that that 'is not discourse that actually serves the people'. Because it makes Obama look bad, and the Anointed Journalists don't like it.

This is the Journolist bunch. Who tell us they're just journalists doing their job, etc. Except their damned job is NOT supposed to involved planning to trash people for daring to ask questions the Anointed Journalists don't like; their job is NOT supposed to be suppressing news just because they like the candidate the news causes problems for.

So the question isn't "Why don't you trust us?", it's "Why SHOULD we trust you and what you 'report'?"