Definition of a media echo chamber

[NJmaverick]

The term "media echo chamber" can refer to any situation in which information, ideas or beliefs are amplified or reinforced by transmission inside an "enclosed" space. Observers of journalism in the mass media describe an echo chamber effect in media discourse.<1><2> One purveyor of information will make a claim, which many like-minded people then repeat, overhear, and repeat again (often in an exaggerated or otherwise distorted form)<3> until most people assume that some extreme variation of the story is true.<4>

http://en.wikipedia.org/wiki/Echo_chamber_(media)

Sound like a place we know?

[get the red out]

1. Good explanation

It will probably reach a point where they wonder why everyone else has gone off and left them screaming. It greatly diminishes the credibility of a position for its supporters to engage in non-stop, screaming hysterics. I doubt they are thinking that far ahead though, the immediate satisfaction of their echo chamber is scratching their anger itch and they don't need anything else right now.