A Necessary Shock? is a groundbreaking multi-media exposé of how 265 Iowa law enforcement agencies have quietly adopted the use of powerful electrical weapons commonly known as Tasers without establishment of required training or ethical standards to safeguard against abuse. The investigation told the stories of 11 different cases: One where a mentally disabled woman was tased four times in an effort to force her to change her clothing; two people who died in 2013 and eight who filed lawsuits alleging Iowa law enforcement officers used excessive force with the devices. Notable in this investigation is the collection and publication of videos in six of the cases. This evidence -- one showing an officer tasing a man who was already on his knees with his hands behind his head -- was made possible through relatively new lapel camera technology worn by some officers. Additionally, some Tasers themselves now have cameras, which were additionally collected through public record requests and published in this series.