According to Elements, the eight principle for journalists is that "journalists should keep the news comprehensive and in proportion." What does that mean? It means to tell the story accurately, to not leave out or over-emphasize details, to tell things as they are. Sensationalism is out, and so is downplaying.
Elements used the example of cartography: when drawing a map, cartographers are careful to chart accurately. Distortion is a bad thing: you don't want to misrepresent the size of the Coast of Important Information. You don't want to play up the Goldmine of Misleading Information. And for the love of journalism, don't plop the Sea Monster of Made-Up Facts in the News Article Ocean in the name of selling a few papers.
However, as Elements also points out, the metaphor can only go so far: cartography is an exact science, and journalism is not. "Proportion and comprehensiveness in the news are subjective." Journalists must find the correct balance between minimizing and hyping.
Elements has a great litmus test for deciding when a story has been hyped: "Human emotion is at the heart of what makes something news. Once you try to manufacture it, or use it to bring attention to yourself, you have crossed the line into something there is already enough of--reality entertainment."
Addtionally, this Poynter article gives the criteria for hype:
- Amount of coverage: How much time and space is this news occupying?
- Dominance of coverage: Is this news taking over a platform (website, newscast, front page) and/or dominating several platforms?
- Prominence of coverage: How prominent is this news? Is it leading a newscast, on the front page?
- Type of coverage: Is the news trivial or vital? Are respected newsmakers acting as if it’s vital? Is the event unexpected, rare?
- Tone of coverage: How urgent is the message, how intense the delivery? Are the graphics and images conveying crisis?
- Context of coverage: What else could or should be receiving our attention instead?