Okay, so we just had a recent incident where I got VERY upset with another mother and had to yell at her to do something with her child. My friend and I were at the park with our kids, both which are 1 1/2. Our kids were playing with these metal bars that move around and make musical noise attached to the jungle gym. A much older child, about 4, ran from out of nowhere, shoved both our kids to the side and began to not only play with the bars but hit, yes hit, our children. I picked up my son. My friend stopped his arm as he was about to send a hard whack across her little girl's face and told him that these are small children and he should not hit them. The child then proceeded to hit and punch my friend. I turned to the mother and asked her to please do something as her son was hitting our younger children (and now my friend). She shrugged her shoulders. Yes, she simply shrugged her shoulders. I had to start yelling at her to get up ther and stop him because he was going majorly beserk on my friend, she was trapped in the corner and my friend did not want to use any force on this child. The mom finally walked up the jungle gym (slowly) and asked him to come over to her. At which point he threw himself on the ground into another tantrum and the mom walked away. At least this gave time for my friend to grab her daughter and move. So, this is one extreme example of when a parent needs someone to tell them how to parent. Most of the times, its just annoying, but I would never do it if it wasn't necessary.