Mass Hate explores why the brutality of humankind erupted and flowed more expansively in the twentieth century than ever before. Psychologist Neil Kressel recommends specific steps to help stem this Washington Post Kressel has a jeweler's eye for deflating grandiose conjecture....On Nazi Germany he is especially strong. He treats landmark researchfrom Hannah Arendt's 'banality of evil' thesis to the obedience studies of Stanley Milgram-respectfully but not reverentially. It is easy to develop confidence in the author's discernment.