Metro is not exactly the most reliable paper, but there definitely are indications that (inner) city kids in the western world (and I imagine in other (post-) industrial societies too) have little to no idea where their food comes from. If your parents or carers never take you to the countryside, and you mostly watch children's cartoons, chances are that you're not going to pick up on the fact that what you're having for dinner was once a happy little porker.
You know, there comes a part in every parents life (at least it should), where you have to tell your kids that they are eating cute little animals. It's wrong
not to inform your kids about what they are having in their everyday diet.