Recently an American named Kevin Underwood was caught with a murdered 10 year old girl in his apartment. The girl was chopped into pieces. According to Underwood, he was planning to eat her. Underwood was a cannibal. The atheist must accept what Underwood has done. Why?
The atheist has no moral authority to appeal to. The atheist might disagree with what Underwood has done, and feel that Underwood's actions are "wrong," but Underwood simply disagrees with the opinions of the atheist. Who is to say whose opinions are right?
The atheist does not believe that human life is sacred. Atheists must accept and embrace the world they claim to believe in, a world where animals, including men, kill and eat each other.