Old Cowbelle: The Boston Marathon
It's hard to understand what goes on in the mind of someone who would set off bombs with the intent to harm people. What kind of "twisted" person is that? Does he/she get some sadistic satisfaction, hearing about the deaths and serious injuries that was the result of their crime?
There must be no conscience present, just evil intent. The thoughts and prayers of so many will hopefully give some sense of comfort to those who were affected by it.