I agree that you canīt just touch random kids, but honestly if I see someone screaming in pain, be it a child or an adult, I will reach out to help.
I had never considered it to be inappropiate
Imagine you are walking down the street and u see an infant run, fall flat on his face and start crying, if his parents are not in sight or at a considerable distance I would help him get up. I donīt think I could just watch and wait until the parents or someone comes and helps him. Is this wrong??