Media coverage of disasters can have lasting effects on children's mental health. Disaster communication experts say disaster media coverage can have lasting effects on children's mental health and suggest teachers and parents be prepared to respond to questions during and after a catastrophe. Source 2m.
While seeing people suffering and disasters can affect young minds I think its good to see what is happening in the world. The children just need to be explained otherwise we become overprotective and when they experience these things for real they won't know what to do.