As to this bias' reality, there's a story currently in the news that illustrates it well. To wit:

Nicole Shanahan, billionaire, entrepreneur, and Robert F. Kennedy Jr.'s running mate, just made a startling confession. "I was completely misinformed about what MAGA is," she admitted in a recent interview.

And it was the media that misinformed her.

(Now, who, again, is spreading "misinformation"?)

The Transformation Begins
American Thinker (AT) reports on the story, writing that until "recently, Shanahan's political orientation was Democrat. For 20 years, she's donated to Democrat candidates and funded Democrat issues." The website provides quite a bit of biographical information on Shanahan, too. It informs us, for instance, that she holds some anti-establishment positions (e.g., she's suspicious of Big Pharma). But we'll pick up the story with her entrance into politics. As AT relates:

In March 2024, Shanahan joined Robert F. Kennedy, Jr., as his running mate in his independent presidential campaign. By this time, Shanahan had already witnessed the Democrat party freeze Kennedy out of the primaries, and from March forward, she saw Democrats ensure that Kennedy couldn't get on most state ballots.

Now that the campaign is over and Kennedy has endorsed Trump, Shanahan has done a few press appearances—with conservatives, everyone from Jesse Watters to Adam Carolla. What's interesting is that [due to] this exposure to actual conservatives, rather than to the leftist caricature of conservatives, … as she told Dave Smith [host of the Part of the Problem podcast], she now understands how the media and the Democrat establishment have consistently lied about conservatives and the MAGA movement.