In my opinion people are the part of the cociety so they have right to know every things about their world.When they know every events that happen in the world  they can protect themselves easier for example they can precaution from some of the diseases such as HIV or natural disasters such a Earthquake but another hand because of human's emotion they shouldn't show the shocking or provocative images such as crime and killing perhaps these shocking images stay in the children's mind and unfortunately causes a bad impact also teenagers don't have enough experience of the life so they can't recognize the action is true or false. They want just copy it and maybe it makes danger for them.
In brief TV News can report all news but without shocking images.