To this end the tabloids are by far the worst at cherry picking what it's readership will be disposed to, and ignoring everything else. Whereas the broadsheets report the news primarily, and their own ideological bent in a far less intrusive way.
Less intrusive can be more sinister, I think.
Many years ago I did a piece of academic work looking at the political bias of newspapers, based on their coverage of that year's Conservative Party conference. I found that every paper had a left-leaning stance (using a content analysis technique that involved coding), except the Sun. It didn't matter what words were actually used in the coverage or what political preferences were being expressed - when you actually analysed and coded it, some of the results were not what might have been expected. I'm not saying that those results would be the same now, by the way, but it did make me think about covert messages in the media.