Basically they scraped up every bit of "Bad News" they could find. Murders, robberies, car wrecks and natural disasters. After a few months of that I noticed I was getting depressed after consuming all that. I'd wake up feeling fine, go to work and get done and still feeling fine. But after that hour and a half I felt like life sucked.
So I quit watching it and the depression went with it. Since then I've made a point monitor the news and learned to keep that in perspective with what's going on close to me.
BTW, that News station was one of the very 1st to be bought up by "FOX". Since then they pivoted from focusing on tragedy to political outrage, but the effect on ones view of life is obviously very much connected to the "news" they consume, and a great many are attracted to gloom and doom and outrage.