This entire media "bias" meme really separates those who allowed their schooling to interfere with their education, and those of us who didn't. What would unbiased media even look like? I don't know, but it would certainly be a state propaganda feed, because something can only be unbiased as measured against a ratified, societal norm.
For Act II, how about we stick our little strip of pink/blue bias-detection litmus paper into the baptismal bowl at Lakewood Church? Bias? Just imagine. Part of a giant, orchestrated, financially flush media empire? Absolutely. Harder to Google than the printed word? Who would have guessed?
There's a good sociological reason Wikipedia is largely authored by literate, STEM-positive, over-educated, middle-aged white males such as myself—many of us keep our Sunday morning calendars free and clear of conflicting obligations.
Journalism—the kind that operates outside the church—also, tilts toward a literate, STEM-positive, over-educated, professional cadre.
I once read a book by an IT consultant from way back. (Gerald Weinberg would have been on my desk at the time, but I'm not sure it was him.) As the story went, he was shooting the shit in the cubical of the middle manager who was likely to retain him, and noticed a huge, fancy chart on the wall documenting the weekly software defect rate. Seeing an in, his mouth shot out "looks like you have a problem here with software quality".
Already steaming, the middle manager shot right back, "what the fuck do you mean?" and proceeded to explain that the chart was just one artefact of an industry-leading quality management program that actually bothered to meticulously self-assess, which was almost unheard of in its time. The consultant had been brought in to forestall future pain, rather than medicate human folly. Lesson learned: think before you assume that smoke means unmanaged fire.
Journalism self assesses, bias purportedly found (by an otherwise unloved wolf-calling sub-population whose standard of hard thinking is managing to distinguish red from blue along a single axis).
Wikipedia self assesses, huge pockets of white male nerds discovered.
The church self assesses, oh noes we've got a few here who haven't swallowed the catechism lock, stock, and barrel; we should redouble our efforts.
Hmmm, different agendas.
At the end of the day, bias is mainly found in the organizations leading the curve in self-assessment (not hard to do, as this is so rarely done at all).