It follows that the rule applies to stories about political scandal, precisely because it’s just that — politics. But what happens when that cardinal rule is applied to one party but ignored for the other? Favoritism? Bias? No, it’s far worse than just that. It is a commitment to abide by the rules of journalism with one party and then a deliberate attempt to protect the other, even if it means violating the most basic rules of news reporting.
http://www.nationalreview.com/article/385185/hide-d-showcase-r-l-brent-bozell-iii