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1.
A state of depression, ennui, or melancholy brought on by the sheer profusion of terrible news in the media. A state often made more pronounced when reading online comments on those news stories by trolls and morons.
My state of mediacholy was so pronounced that not even a photo of the royal wedding could make me forget the news about the tornadoes in Alabama and the images of suffering.

OR

It was bad enough reading that a congressman from Michigan wanted to create a law that all foster children must wear secondhand clothes; but I sank into a state of mediacholy after reading so many online comments from readers who had even more draconian suggestions for victimizing foster children.
by didion April 29, 2011