I mean in general, such as news headlines, media, etc.
Even on MN the more incendiary thread titles attract more attention. It isn't a fixed rule obviously but it's fairly common. I think it's maybe how we are as a culture, that we notice stuff that will wind us up, affect our ego, or tell of terrible things before more positive and inspiring material.
Lots pile in to threads arguing about income, class, anger and tragedy. I've done it myself of course
.
Sometimes you have to turn off, tune in to something more pleasant and inspiring instead.
Same with the newspapers, so many headlines designed to get attention are awful, absolutely intended to get a knee jerk response or to get us riled up. It could be said that it is relatively easy to create social disconnection and division this way.
I'm sure someone once tried to present 'good news' on tv and it fell flat. It just doesn't seem to get the same amount of attention.