Media tell us facts but not all the times. They instead do a selection--based on the interests of their corporate, political parties, etc--and just tell us some of facts. Is there any word for such kind of selection?
It is called media bias; cherry picking is sifting through data or documents to find any information which you can use against your target.
The media are cherry-picking the stories that air. Defined at Merriam-Webster:
to select as being the best or most desirable; also : to select the best or most desirable from.
Further, wiktionary gives us the origin/ etymology:
A metaphor, from the idea of picking through a bowl of cherries and seeking the best for oneself, or the idea of picking off the cherries for oneself from a cake or dessert.