 Complete the following phrase:  In 2009 he published his research on ten school shooters based on the analysis of the Columbine High School massacre, the Virginia Tech shooting, the Red Lake shootings, the Thurston High School shooting, the Parker Middle School dance shooting, the Westside Middle School shootings, the Heath High School shooting and the Bethel Regional High School shooting. Langmans book Why Kids Kill: Inside the Minds of School Shooters has been translated into German, Finnish, and Dutch. When the book had been found in 