1
general::
people who are prejudiced
racist
someone who treats people of other races unfairly or badly:
• When he expressed his opinion, he was branded a racist.
bigot
someone who has strong unreasonable opinions, especially about race or religion:
• a racist bigot
sexist
someone, especially a man, who believes that their sex is better, more intelligent, more important etc than the other:
• Will the sexists ever support a female President?
Longman-Thesaurus