I overheard a very loud conversation between a husband and wife in a super populated location. One spouse was telling the other about hitting a pedestrian that day. And then when this person saw the pedestrian get back up, he/she drove away. I mean she/he drove away without stopping, even. The person just looked back, saw that the pedestrian got up, and drove away.
There was no shame at all in the conversation. There was actually blame placed on the person who was hit by a car!
Yes, I called the police. I didn't want to be involved, but I suppose I kind of have to. It's part of being a responsible member of our community, which is what we're teaching the kids at school.