Impact of daily news on children

Again a shooting.

Again I wonder about the impatct daily news has on children.

There's so much negativity in the news and it comes from all parts of the world.

I fear that certain children might start to think that this world is all bad and negativity.
A few times a week it's in the news that children aren't safe, and men in neat suits look in the camera and state that they can't cope anymore.

Grown ups send so many mixed messages that children get aggressive or just don't care about the feelings of others anymore.
Or they close themselves for their own feelings.

What are your thoughts about this?