The Real Media Bias
The most common accusation I hear about media bias is of “the liberal media”. It is true that every poll shows an overwhelming majority of the US media to be liberal Democrats, and I think they would have to be superhuman to completely prevent this from biasing their reporting.
But there is an even stronger institutional imperative for the media- keeping their jobs. This means selling papers, or keeping ratings high, which in turn means telling readers what they want to hear. One of the most powerful biases coming out of this is “if it bleeds, it leads”. This bias is widely recognized, but people have not recognized the extent to which it counteracts liberal bias.
The classic “it bleeds” stories are about crime, terrorism, and dangerous foreign leaders. With a few exceptions, the more worried or scared people are about crime and terrorism, the more conservative they get.
A truly liberal media would conspire not to cover these things- but it is hard for me to think of local outlets that don’t focus on crime (the weekly paper that is all about music?), or national ones that never mention ISIS. I conclude that “if it bleeds it leads” is the stronger bias.