Many need life to be upbeat, but many are dissatisfied too. The entertainment reflects that, gives us a window to a better life, even if only for an hour or two. Tragedies do have a long tradition in entertainment, but comedies are about laughter, and dramas are about a series of adverse events and then the good people win. Soaps are an unending series of tragedy followed by triumph.
Where tragedy shines is in showing injustice. We don't just like happy endings, we like being outraged by injustice. We can use that meme in conjunction with Unrest. Its just the first part of the story. If the world responds then the second part will be better.