Lanza's Mother was a Doomsday Prepper

Rush Limbaugh, Glenn Beck, Alex Jones, the NRA...they all spread their conspiracy theories and have built a culture of fear in the United States. Now that we know Newtown school shooter Adam Lanza's mother Nancy was a "doomsday prepper" and a "survivalist," what role do these conspiracy theorists and culture of fear spreaders play in these tragedies?