Deviancy Amplification Spiral

Mr White recently directed me to this which is incredibly useful in my research.

Deviancy amplification spiral (also simply called deviance amplification) is a media hype phenomenon defined by media critics as an increasing cycle of reporting on a category of antisocial behavior or other undesirable events.

This is a perfect explanation of exactly what is happening with the media hype in knife crime at this current moment.

http://en.wikipedia.org/wiki/Deviancy_amplification_spiral