The [[FBI]] has some done preliminary research on the [[psychology]] of mass shooters: [https://www.youtube.com/watch?v=CzpIJtRJLTE FBI on psychology of mass shooters]. | The [[FBI]] has some done preliminary research on the [[psychology]] of mass shooters: [https://www.youtube.com/watch?v=CzpIJtRJLTE FBI on psychology of mass shooters]. |