There are a lot of people who have racial or other prejudices. But the number of people that think "that I am a subhuman who does not deserve to live" is very s

There are a lot of people who have racial or other prejudices. But the number of people that think "that I am a subhuman who does not deserve to live" is very small. Even in the deep US South in the age of slavery most people, while being racist in various measure (to be sure, most people at that epoch probably were racist to some measure) in majority did not think people of other race "do not deserve to live". Different rights and privileges - sure, many supported that, prejudices - sure, a whole lot, but denying people of other race basic right to live? Even then most would stop there. Certainly the vast majority would now, when being a racist is way out of fashion. It is a human nature to prefer people like you (in various way) to people unlike you. But it's not in human nature to deny other humans right to live. At least not in a modern human nature in the US. It needs a very strong ideological brainwashing to get there. And, fortunately, only small number of people damages their brains in this way.