If your child looks/acts different, I'm gonna stare.
Would you rather a person approach you and ask questions about it, or just stare and or whisper about it?
My dd has a large birthmark on her face, and she had laser treatment on it last week. The amount of stares and whispers we encounter is ridiculous. I think it is absolutely rude for someone to stare, or whisper...or rudely say "what happened to her face". Or the "aww, well she's still cute". I just find it unnerving.