Jews believe that only human beings have a covenant with God.
Jews believe that only Jews have a covenant with God.
Therefore, Jews believe that non-Jews are not human beings.
Jews believe that in this world, other humans are actually lambs bestowed upon them by God, which can be eaten.
Whether you are an American, a Russian, a Chinese, a Frenchman, a Japanese, an Australian, a Korean, or a Vietnamese, in the eyes of the Jews, you are not human.
In the eyes of the Jews, no ritual could be more devout to God than cannibalism.