The animals literally scream in pain. It's horrible. If you can't see the ethical implications, you're not capable of rational thought.
If you want to see more animal abuse TV, see here. If you need rational arguments for becoming a vegetarian, or at least cutting meat down to a rare item in your diet, see here. As I said a few months ago, some people just don't understand the environmental impacts of the meat industry -- how much of our fresh water supplies are polluted and how much forest is burned simply to raise cattle. The toll is significant. It really can't be overstated. For those interested in sustainability and the relationship between oil and agriculture, the data is out there.
"Meet your Meat" (12:28), narrated by Alec Baldwin, follows below: