The rule of thumb for all news operations is that stories are assigned their importance on the basis of what affects or interests the greatest number of one's readers or viewers. Depending on the nature of the newspaper or broadcast, the balance between what "affects" and what "interests" is quite different. The first criteria of a responsible newspaper such as The New York Times is going to be that which their readers need to know about their world that day — those developments that in one way or another might affect their health, their pocketbooks, the future of themselves and their children. The first criterion of the tabloid is that which "interests" its readers — gossip, sex, scandal.
