Actually bright boy it could have been your fault for disobeying your grandfather. But if you honestly expect anyone to be able to keep an eagle eye on a kid 24*7 or even every second of a shopping trip (you know when your looking at things like labels, prices, and taking stuff off of shelves and putting it into a cart) you're nuts..
Adults watch children. A disobedient child is the responsibility of the Adult.
And its "bright girl" thank you very much!
I guess that you have to value your kids more than you value the shopping.
The scenario that you paint about the shopping trip shows that the shopping is more important than the children. If there are too many kids to watch, even a single mom can leave them with a sitter, a neighbor or with family. Taking children to an uncontrolled enviroment where you cannot keep an eye on them can have deadly consequences.
I am sure that this mother thought that she was being careful and I'm equally sure that she loved him very much. But just as assuredly, the child is still dead and he need not be and may not be if he was not 5 feet away in an uncontrolled environment.
Even if the Walmart store manager deliberately pushed the mirror over on the child and he admits it, the fact is that she was too far away to prevent the child's death.