The right-wing has told this lie so often that some actually believe it.
From the tone and content of your posts, I think it best that you and I never debate any political subject ever. However, I will respond once and see how it goes.
I'm sure we all agree that widely-held beliefs are often baseless. Large portions of the most advanced societies are incapable of logical thought. I would cite examples like SETI, faked moon landing conspiracies, Kennedy assassination conspiracies, the "Bush lied" mantra, 9-11 "Truthers", and man-made global warming theories. I'm sure you could site different examples.
We all have pet-peeve issues we feel are neglected or over-emphasized due to media bias. For example, the abuse at Abu Grahib you mentioned was a NYTimes front-page story for 44 consecutive days although no one was killed, injured, and the night-watch guards involved were appropriately investigated and prosecuted.
But that's not the sort of thing which leads
people outside the right-wing to perceive a leftist media bias. Beyond public opinion, empirical evidence demonstrates that a leftist attitude permeates the upper echelons of professional journalism, especially at the national level.
Multiple polls of national journalists all show the same result: a disproportionate percentage of journalists consider
themselves to be politically left-of-center. Compare how journalists poll and vote on issues to the general populace, and a significant left-wing bias is undeniable.
Once people began noticing this bias over 25 years ago, they began gathering and sharing anecdotal evidence. Several independent, watchdog right-wing organizations arose in response to perceived mainstream media bias.
As an example of the evidence fueling the perception of leftist bias, here's the ever-growing
"Dishonest 101" list. This is a list of infamous journalism scandals rather than a list of political bias. These are the bigger scandals which made national headlines.
Researching each scandal reveals that most of them had unknown motives or were just laziness and self-interest at work. But there's no escaping that less than ten scandals demonstrate a right-wing bias, while over 40 showed varying degrees of left-wing bias...
- No bias / unknown: 1-3,5,11,14,18,21-23,25-26,30-31,35-37,39-40,42,44-45,47-51,54,56,58,60,65,71-75,79-80,82-86,88-90,93-94,99-100
- Shows right-wing bias: 10,38,64,87,98
- Shows left-wing bias: 4,7-9,12-13,15-17,19-20,25,27-29,32-34,41,43,46,52-53,55,57,59,61-63,66-70,76-78,81,91-92,95-97,101
In the above exercise, I posted the link to the original article and enumerated each instance so that you can judge each scandal for yourself. My criterion for bias was simple: the fraud must be either committed to further a political agenda or the fraud was overlooked due to the agenda of the news service.
Undoubtedly, this exercise will break down into an argument over why incident "X" does or doesn't show political bias. I will reconsider any judgments you disagree with, but I doubt enough mistakes can be found to reverse such a clear outcome. Of the scandals I didn't recall offhand or never heard before, I carefully researched them. If I couldn't judge with confidence I placed the item in the "No bias / unknown" category.
This list of infamous journalism scandals obviously does not represent the ethics or agendas of mainstream journalism. Instead, it demonstrates what
type of fraud is most often committed and what fraud is most likely ignored by editors in their reviewing process.
Either there are very few conservative journalists, or the conservative journalists seldom commit fraud, or there are many more liberal journalists, or liberal journalists commit fraud more frequently. Obviously, many people now suspect there are many more liberal journalists.