A history

Maus was powerful stuff. The thing is cruelty of that nature isn't a new thing. In a lot of cases there were not anywhere near that many people, mostly because in the past there may not have been that many people around in some cases. Take a look at the Spanish Inquisition for example this kind of blunt hatred against people is depressing. It even continues today not quite on the scale of the holocaust but genocide still exsits.