This is a sermon reflecting on the shootings in Aurora, Colorado, but the comments are applicable to the shootings of today as well:
Click here to listen
Delivered on 7/22/2012.
Update: The shooter was allegedly a "Goth" who suffered from some personality disorder. This disorder is becoming an epidemic: Spiritual-Deficiency-Disorder.
You should also read "Trained to Kill", by military psychologist Lt. Col. Dave Grossman.