Jay Rosen argues for evidence based journalism, against accusation led reporting: 
"If you are evidence-based you lead with the lack of evidence for explosive or insidious charges. That becomes the news. If you are accusation-driven, the news is that certain people are making charges. With the details we may learn that there's no evidence, but the frame in which that discovery is made remains "he said, she said." (See my 2009 post about that.) "
https://storify.com/jayrosen_nyu/evidence-based-vs-accusation-driven-reporting?utm_source=API+Need+to+Know+newsletter&utm_campaign=c681c44bba-EMAIL_CAMPAIGN_2016_11_28&utm_medium=email&utm_term=0_e3bf78af04-c681c44bba-31701933