I disagree with Bud. I think there is a lack of parenting skills when kids are running around malls unsupervised. As for the Mom with kid on leash on the breakwall, are you talking about the concrete slab with a vertical drop of several feet into Lake Ontario, with no way to get out once you are in the water? Seems like a very sensible safety precaution, if the kid is prone to running around unpredictably.
I'd like to know how old the kid was. There is a big difference between a 3 year old who has no understand of what is dangerous, and a 14 year old. I guess I have assumed the kid was quite young. I'd also like to know what parenting experience all those people have who claim that the mother in question lacks parenting skills. Personally I don't have kids but I do have a bit of experience with nieces and nephews. Because it is one thing to scoff and say a person has no parenting skills while it is quite another to be able to control what a young child does.