Tulsi has a good argument here. CNN wants to act like they are putting on debates, where people can get to know the Democratic candidates. But they aren't like real debates, they are like entertainment sound bites. Where most of the candidates just spout off liberal talking points. A real debate would let the candidates go back and forth with each other, and have a moderator that knows what fallacies to call out.
The "reality" gets worse from there. If you go to the most popular liberal networks web sites, they have like .1% of their main page dedicated to their Democratic candidates. These networks aren't focusing on any of these candidates or any issues. The liberal media is mostly talking about Trump. In fact, the most coverage they have given to the democratic primary happened after someone riled up the Clinton camp.
The stuff I've mentioned is just the tip of the iceberg. I mean I could probably write a book, but kind of feel like I should be getting paid to write any more. I will conclude with this though. Ask yourselves what does the liberal media seem most afraid of. Because it doesn't look like they fear Trump, nor have reason to. They are cashing in off every little scandal and tweet. So it seems to me they are most afraid of their viewers figuring out just how negligently they handle journalism.