Sometimes negative news does come out but it is often exaggerated and manipulated to spread scandal. Journalists sometimes risk becoming ill from coprophilia and thus fomenting coprophagia: which is a sin that taints all men and women that is the tendency to focus on the negative rather than the positive aspects.
There are events which are so great that if a writer has participated in them his obligation is to write truly rather than assume the presumption of altering them with invention.