From FEE:

If the news that gets reported doesn’t bother to tell readers and viewers about angry left-wing lunatics who assault Republican campaign workers, set fire to GOP offices, or shoot Republican congressmen, and if reporters and pundits don’t care to spend much time writing about a series of threatening letters testing positive for ricin poison or threats of and/or the actual attempted murder of Republicans over their political views, then the people who consume news will not know about those kinds of things.