Dr. Melanie Joy Explains "Carnism" on the Show To the Contrary

Dr. Melanie Joy discusses "Carnism," a psychological system--that we all have--which explains why we eat certain meats (beef) and reject others (dogs, horses). Carnism is explained in her new book "Why We Love Dogs, Eat Pigs, and Wear Cows." Appearance on PBS's "To the Contrary" a show featuring fascinating and prominent women