Today while at the zoo we had a small incident with another child. N (3 years old) squatted down next to another child to look at the exhibit better, then the other child(probably between 5 or 6 years old) pushed N over. As N got back up the other child was coming at him with closed fist. Out of reaction I said "um NO! That is not how we treat other kids! That wasn't very nice!!" The mother of the other child came over and said "oh yeah that wasn't nice" but then shot me the look. She went on to say to her group "well LO pushed her kid and she got pissy".

I was fuming, but chose to take the high road and ignore her.

What would you have done?