Ethical Food Choices

Jury duty has taken me away. In the meantime, here's a quotation from a book I'm reading, The Way We Eat: Why Our Food Choices Matter:

"[This is], in both magnitude and severity, the single most severe, systematic example of man's inhumanity to another sentient animal."

Can you guess what "this" is?
________
Difference Between Ethics And Morals

WiseGeek describes the difference between ethics and morals, for which I was grateful:

"Morals define personal character, while ethics stress a social system in which those morals are applied.
...
So while a person’s moral code is usually unchanging, the ethics he or she practices can be other-dependent."

Examples:

"It may be helpful to consider a criminal defense lawyer. Though the lawyer’s personal moral code likely finds murder immoral and reprehensible, ethics demand the accused client be defended as vigorously as possible, even when the lawyer knows the party is guilty."
...
"Another area in which ethics and morals can clash is at the workplace where company ethics can play against personal morality."

________