Attention, grumpy old man. I feel your frustration. I'm glad it was you and not me in a Wal-Mart listening to a screaming kid. But. You're the one who walked into the Wal-Mart. Jeez! Haven't you seen the people who shop there?
That said, Mr. Grumpy, it's not your job to "shut her up." Keep your hands to yourself! Or didn't they used to say that in your day?