Why is the media always so deferential to the state? The reasons may be in part ideological, but there is a public choice explanation as well -- the state (particularly local police and crime stories) generate most of its headlines, and so they have a financial incentive to retain access to the source of so much of their content.
Perhaps even more revealing, though, was this:
To start, [San Diego County Sheriff's Office] spokeswoman Jan Caldwell explained to the room full of journalists why it is so important to be nice to her: "If you are rude, if you are obnoxious, if you are demanding, if you call me a liar, I will probably not talk to you anymore. And there's only one sheriff's department in town, and you can go talk to the deputies all you want but there's one PIO."
Here we have the heart of the matter. "Professional" journalists may, indeed, be brilliant, talented, well-trained, professional, with an abiding appetite for hard-hitting but neutral reporting. Yet professional journalists also depend on relationships. Ms. Caldwell calls that fact out, sending law enforcement's core message to the press: if you want access, play the game.
The game colors mainstream media coverage of criminal justice. Here's my overt bias: I'm a criminal defense attorney, a former prosecutor, and a critic of the criminal justice system. In my view, the press is too often deferential to police and prosecutors. They report the state's claims as fact and the defense's as nitpicking or flimflam. They accept the state's spin on police conduct uncritically. They present criminal justice issues from their favored "if it bleeds it leads" perspective rather than from a critical and questioning perspective, happily covering deliberate spectacle rather than calling it out as spectacle. They accept leaks and tips and favors from law enforcement, even when those tips and leaks and favors violate defendants' rights, and even when the act of giving the tip or leak or favor is itself a story that somebody ought to be investigating. In fact, they cheerfully facilitate obstruction of justice through leaks. They dumb down criminal justice issues to serve their narrative, or because they don't understand them.
This "professional" press approach to the criminal justice system serves police and prosecutors very well. They favor reporters who hew to it. Of course they don't want to answer questions from the 800-pound bedridden guy in fuzzy slippers in his mother's basement. But it's not because an 800-pound bedridden guy can't ask pertinent questions. It's because he's frankly more likely to ask tough questions, more likely to depart from the mutually accepted narrative about the system, less likely to be "respectful" in order to protect his access. (Of course, he might also be completely nuts, in a way that "mainstream" journalism screens out to some extent.)
Which is why, despite Joe Arpaio's frequent antics that make national news, it falls to our local alt-weekly here in Phoenix rather than our monopoly daily paper to do actual investigative reporting on the Sheriff's office.