Humanism is an imagined order that puts humans at the top of its hierarchy, and it tells people to cooperate by making life as good as possible for humanity. While this might sound compelling to the reader, Harari is skeptical about this imagined order, partly because it justifies treating animals poorly. Harari also thinks humanism is a dangerous imagined order because some people (like Nazis and white supremacists) think that only certain races fit at the top of the hierarchy, and this makes them want to get rid of people from other races whom they think drag humanity down. Harari thus worries about humanism because it justifies not only treating animals badly, but it also can be used to treat other humans badly as well.