“I would not know how I am supposed to feel about many stories if not for the fact that the TV news personalities make sad faces for sad stories and happy faces for happy stories."
If you are listening to the news then I don't think you are supposed to feel. Of course I could be misguided about that. Perhaps what you are supposed to feel is rather simply just what it is that you do feel.
However, some of them don't know if it is a sad story or not and do not know when to lower and subdue their voices. Let's just say that is how you can tell who is a good reporter and who IS NOT.