I am friends with this parent. We just have very very different styles. I am FAR more of a kids will be kids parents and as long as no one is bleeding a lot I try to stay out of it. The boys were more than over it by after school. The sister brought it up. The mom is very 'hands on.' Lots of discussions about 'good choices' etc etc and while she doesn't think her kids are 100% innocent all the time, she does have some blinders about how innocent they really are. Her DD was WAY involved in the backpack hitting today but I'm sure if she was hurt she would say that she was an innocent victim. I want a good relationship with this family. I LIKE them a lot. They are very good people, even if we parent differently. ETA; I also know they wouldn't approve of the 'backpack hitting game' that both of their children were participating in.
It sounds to me like everyone has a similar level of involvement. I think I will back off a little and see if anyone else steps up when there is a problem (the flower beds.) I will also try to hold DS back a bit from the stop.
I was worried we were too over the top but it doesn't sound like we are too far out of line. I told DH he was a little harsh this am and he gets that.