I was on the children's desk for most of the evening because the Thursday night Youth Services person was out sick. A pack of three kids was running wildly around the children's area. Two of them were the age where, if they fall down and skin their knees, they burst into earsplitting wails. I told each of them repeatedly to "please walk" in the library, reminded them that you "can't run" here, etc. etc. Eventually I asked one if her mom or dad was here with her. She indicated a woman who was helping two older kids with homework at a table in the kids' area. I went to get her to take responsibility for the kids that she had brought to the library (why you think you should take five kids anywhere without a supporting adult is a separate question). This was our conversation:
Me: Can you please ask your children to stop running?
Woman: I already have.
That does not conclude your responsibilities, lady!