Belko002 has hit the nail on the head. Apart from one or two the the more prestigious and recognized leading newspapers of the world, most thrive simply on arousing outrage. They play to our emotions with headlines such as "Bastards!" This, to grab our attention so we'll grab a paper.
The popular magazines are just the same. Some of the women's magazines are a bit less blatant in their attempts to arouse our negative emotions, the the message is plain. "We in the editorial section are better than these twerps."
Even the television shows which immediately follow a lot of news broadcasts are the same. They tend to revamp or recirculate the same dozen or so stories of outrage: people who trash houses, people who fight with their neigbours, businessmen who rip people off, et cetera. Still, so long as you're aware of it, its affects on your own emotional health will be minimized. Problem is, most people AREN"T aware of they're being manipulated.