Milking?

Whenever something sensational happens it seems the media "milks" the story, going on for days and days, 

Recently, we had what appears to have been a mentally ill person stabbing train passengers. Whilst fully understanding this must have been very traumatic for those on the train, I get really annoyed that the media goes on and on about it. In this case it was the BBC. It seems that every story must be rung dry and made to last. We rarely get good news as this is, sadly, not newsworthy.

Recent examples have included the UK Prince Andrew.