I can relate to the content of your post (not directly with regards to Robin Williams as this is covered in another thread) and I think this thread has merit for the effect that these stories have.

It's sensational news for the masses... but horribly triggering for those who are suffering from depression. These days I hardly read newspapers or watch the news due to not wanting to be triggered by such stories. In the UK recently there was a story of a celeb who topped herself which was tragic for additional reason that her mother (another celeb) had done so many years before in reaction to her boyfriend (lead singer of a famous rock band) having done the same.

What the media does not do in most cases when it covers these stories... even with unusual stories of 'normal' people... is follow up with supportive help that people who may be struggling can utilise in times of crisis.

That to me is the tragedy... the media sensationalise stories like Robin Williams but do not use it as an opportunity to educate or use such stories as an olive branch for people who are lost in the wind themselves.