Brutality

The Chinese boy who killed 32 people and then committed suicide in Virginia, USA last Monday really shocked me. I cannot stop thinking about that horrible crime .
To start with, the fact that nobody realised the way the boy behaved leads me to the conclusion that we live in a selfish way where nobody matters.
If we are not able to see that a person who is very close to us is disturbed something is wrong with us, and if we see it( as same teachers and classmate said) and we do nothing is even worst. It shows our incapacity to connect with the others and to feel sorrow for the ones who are suffering.
On the other hand, it seems like America, in this case, never learn. How is it possible that a student have weapons in his dormitory ? Can anybody buy weapons?
What happens with the University now? How will they continue? There many wounds to heal. Security is one issue to be very careful about from now on.
Education is also an issue to take into account, teachers should teach not only academic contents but also values such as respect for the ones who are minorities let say race, religion, natitonality etc. We should learn to be tolerant and accept people the way they are. When we are not tolerant ,when we don`t respect and worst when we make fun of people's faults or mistakes, we generate a huge hate in their souls that in many cases end in brutal episodes.