Children seeing other children hurt and not showing empathy, is a very age-appropriate response. Reason being, empathy is a learned behavior for some children. Empathy is the understanding that someone else has emotions, someone else feels happy or sad and I can respond to that. They way to best show your child empathy, first and foremost, is modeling it. Model empathy in your own environment. Specifically, when your child is in a situation -- teachable moments -- where someone is hurt, and your child seems to just walk on by. Walk your child back and ask them, "Do you see what Johnny is feeling right now? Are they happy or are they sad?" Talk them through it. They will respond accordingly. By actually seeing somebody else hurt and connecting that to the emotions that they already see, that ties in empathy.