i think that the story writers do take after some news stories.
There was a CSI where a guy was very much a michael jackson esque type of guy where he was spending nights with kids and did lots for charities. There was an allegation of sexual assault but in the end it couldnt stick.... sound familiar!?
CSI do it quiet subtly sometimes as well. The season six episode bite me was based on the Micheal Peterson case which was documented in Jean-Xavier de Lestrade's Death on the Staircase documentary