When most Americans buy meat from their local grocery stores, they give little if any thought to how that meat made it to the store. What they probably don’t want to think about is that there is a world of cruelty, biological waste, and toxins that result from the current process of animal factory farming that is spreading disease across our country. Robert F. Kennedy, Jr. talks about what’s really going on behind the scenes in the animal farming business with David Kirby, author of the new book “Animal Factory: The Looming Threat of Industrial Pig, Dairy and Poultry Farms on Humans and the Environment.”