Peter Singer
Peter Singer, philosopher and author of the "Bible" of the animal liberation movement, Animal Liberation (1975), whose parents fled Austria for Australia just before the Nazis forced Austria to unite with Germany, compares vivisection (experimentation on live animals) to the Nazi scientists' treatment of Jewish experimental patients, quoting Isaac Bashevis Singer: "In their behavior towards creatures, all men [are] Nazis" (2002 edition, p. 84).