aeschylus repeats the old myth that Hitler was a "vegetarian." According to Carol Orsag, in Irving Wallace and David Wallechinsky’s The People’s Almanac (1975), however, Adolf Hitler "became vegetarian because of stomach problems" rather than out of compassion for animals, and "was criticized for eating pig’s knuckles."

In a 1996 article, "Nazis and Animals: Debunking the Myths," Roberta Kalechofsky of Jews for Animal Rights states that Hitler "had a special fondness for sausages and caviar, and sometimes ham," as well as "liver dumplings." Kalechofsky states further that the Nazis experimented on animals as well as humans in the concentration camps:

"The evidence of Nazi experiments on animals is overwhelming. In The Dark Face of Science, author John Vyvyan summed it up correctly: ‘The experiments made on prisoners were many and diverse, but they had one thing in common: all were in continuation of, or complementary to, experiments on animals. In every instance, this antecedent scientific literature is mentioned in the evidence, and at Buchenwald and Auschwitz concentration camps, human and animal experiments were carried out simultaneously as parts of a single programme.’"

Are all vegetarians "Nazis"? In their book, The Nine Questions People Ask About Judaism, Dennis Prager and Rabbi Telushkin explain: "Keeping kosher is Judaism’s compromise with its ideal vegetarianism. Ideally, according to Judaism, man would confine his eating to fruits and vegetables and not kill animals for food."

Isaac Bashevis Singer, who won the Nobel Prize in Literature, became a vegetarian in 1962. He once asked, "How can we pray to God for mercy if we ourselves have no mercy? How can we speak of rights and justice if we take an innocent creature and shed its blood?"

Hitler’s so-called "vegetarianism" did not prevent Isaac Bashevis Singer from comparing humanity’s mass killing of 50 billion animals every year to the Nazi Holocaust. In 1987 he wrote:

"This is my protest against the conduct of the world. To be a vegetarian is to disagree—to disagree with the course of things today. Nuclear power, starvation, cruelty—we must make a statement against these things. Vegetarianism is my statement. And I think it’s a strong one."

Isaac Bashevis Singer has also expressed the view that unnecessary violence against animals by human beings will only lead to further violence in human society:

"I personally believe that as long as human beings will go on shedding the blood of animals, there will never be any peace. There is only one little step from killing animals to creating gas chambers a’ la Hitler and concentration camps a’ la Stalin—all such deeds are done in the name of ‘social justice.’ There will be no justice as long as man will stand with a knife or with a gun and destroy those who are weaker than he is."

The late Rabbi Isaac ha-Levi Herzog once made the prediction that "Jews will move increasingly to vegetarianism out of their own deepening knowledge of what their tradition commands... Man’s carnivorous nature is not taken for granted or praised in the fundamental teachings of Judaism...A whole galaxy of central rabbinic and spiritual leaders ...has been affirming vegetarianism as the ultimate meaning of Jewish moral teaching."