This is a very good documentary on The Virginia tech Shootings that traces the origins of Seung Hui Cho. Its well worth the hour and will give you insights into the mind and unpredictability of a this killer. The information contained in the documentary will help in prevention and threat assessments efforts in reducing these type of tragedies from occurring.
The You Tube link is to part one of the series and there are several more broken down into 10 minute segments for a total of an hour. be sure to watch them all.
This documentary details the story behind Cho Seung Hui, a South Korean student at Virginia Tech University, who committed a mass murder of 32 people and wounded 25 others in the shooting rampage which has come to be known as the Virginia Tech massacre.
Cho killed himself after law enforcement officers breached the doors of the building where he had killed and injured the majority of his victims.
Cho arrived in US at a young age with his family. He had a severe form of anxiety disorder known as selective mutism in middle school as well as depression.
During Cho’s last two years at Virginia Tech, several instances of his aberrant behavior, as well as plays and other writings he submitted contained references to violence, and caused concern among teachers and classmates.