is TV news a window on the world?

To the world TV news is treated as a "Window on the world" showing reality as it is and providing all the coverage for all the events happening in the world. but is that really the case as these shows make it out to seem? even though it states in the law (as part of the Ofcom accuracy and impartiality document) it states
"All news in any part of the service should be presented with due accuracy and impartiality."

As can be seen in most TV news opening there is a fair amount of transparent texts and views of the earth from space trying to connotate that they are only telling the truth and the news covers the whole world in its stories.

in fact it is much more complicated as it seems to be. things being put forward such as Galtung and Ruge news value theory and the gatekeeping process make this whole "view" on the world not be as transparent as it is made out to be.

Galtung and Ruge news value theory states that the most significant news values are Frequency (short-term events like murders are preferred over long-term developments like a famine) , Threshold (Size of an event affects the importance) , Unambiguity (events do not have to be simple but they must be accessible to the public - i.e. simplified by the media) ,Meaningfulness (relevance) , consonance (where the familiar is more likely to be thought than the unfamiliar), unexpectedness ( or ‘surprise’ where it is the rarity of an event which leads to its circulation in the public domain) , continuity (once a story achieves importance will be continued to be covered for some time), composition (this is to provide a sense of balance, gloomy news with good news, foreign with domestic.), reference to elite nations (events are more likely to be reported if they occur in the developed world; the threshold system would apply for developing countries’ events to be reported) , reference to elite persons (the famous and the powerful are more newsworthy than ordinary people) ,personalisation (events are seen as actions of people as individuals; an institution may be personalised by reference to a prominent person within that organisation) ,negativity (bad news is good for the press and TV news; the threshold is much lower for bad news than for good news). stories that fill the categories are more likely to appear. for example if i break my leg it won't be so important whereas if someone with a much more important standing like an actor, breaks their leg then it will be news worthy.
As well as that process there is the gatekeeping process which is a set of criteria that the stories must go through before being broadcast to TV. Any stories that don't pass these gates get dropped into the dustbin of history to never actually see the light of the TV news shows. There are many gates a story must go through, for example an event happens and they call a news station. then the story has to be considered newsworthy, once that has been accepted the editors decide whether they can slot it into their show and talk about it, the story is then passed through into the news show, then based on the news values for each of the stories they are arranged to be cast out to TV.
A big factor to whether a story goes through is the competition of the other News TV shows, because bigger coverage of stories create a bigger audience and more views.
 Sometimes some TV news shows will use the continuity systems used in fictional films to create a emotional attachment for a subject of news that isn't really something that can be considered emotional