The need to understand Dylan's and Eric's actions

The author pointed out repeatedly that people wanted to know why Dylan and Eric walked into the Columbine High School and killed thirteen of their classmates. The short answer is that they were psychopaths filled with rage, wanting to do a great deal of damage to the world but settling on the attack on the school. The boys had set out with a plan to bomb the school and to shoot those who were fleeing the scene. The bombs didn't go off so they went inside with the intention of simply killing whoever came into contact with them. Many people wanted there to be a reason behind the killings so badly that the myth of Dylan and Eric killing jocks, students who had bullied them, or targeting specific ethnicities was reported as fact. Even when that was disproved, the myth continued...