How to manage and prevent children's shopping meltdowns

Kids act up in stores--it's a fact of life like birth and taxes. Ideally, we parents should march our little miscreants out when they misbehave, but that's not always practical. I heard one (rather self-righteous) mom say that she leaves the cart and goes home if her kid acts up. That's counter-productive. She's taught the kids nothing and made more work for herself and the poor clerk who has to put her groceries away. Here are better strategies. How to manage and prevent children's shopping meltdowns