1) Bigot 2) Segregator 1) Segregator 
[short story] `Segregationist` is a science fiction short story by Isaac Asimov. The story was written in April 1967 and was first published in December in Abbottempo, a magazine produced by Abbott Laboratories, then later included in the collections Nightfall and Other Stories (1969), The Complete Robot (1982) and Robot Visions (1990). ==P...