"and then with the power, say, of Himmler?"

Lewis is referring to Heinrich Luitpold Himmler. According to the United States Holocaust Memorial Museum, "Himmler presided over a vast ideological and bureaucratic empire that defined him for many--both inside and outside the Third Reich--as the second most powerful man in Germany during World War II. Given overall responsibility for the security of the Nazi empire, Himmler was the key and senior Nazi official responsible for conceiving and overseeing implementation of the so-called Final Solution, the Nazi plan to murder the Jews of Europe. . . . Captured by Russian soldiers on May 20, 1945, he was turned over to the British, to whom he eventually confessed his identity. On May 23, 1945, while undergoing a body search, Himmler killed himself by biting down on a cyanide capsule hidden in his mouth for that very purpose."