This whole discussion on the Dark Mountain website is a good example of a group of people reflecting upon this perception, though the range of expectations is quite diverse (some are considerably darker than others), as is the range of emotional responses to this perception.
Social discontinuities are nothing new. There have always been revolutions, wars and game-changing social transformations. My interest is whether there might not be something novel in our present situation and the kinds of perceptions and fears it generates. Articulating that novelty is something that I've been working on for some time and I will post more about this over the coming months.