Mine would be “a person who shows or feels prejudice against people of other races , or believes that a particular race is superior to another”
As for my feelings on the matter, there’s a lovely two-line exchange in the movie Gettysburg that sums it up fairly well:
"Colonel Joshua Lawrence Chamberlain: Tell me something, Buster… What do you think of Negroes?
Sergeant ‘Buster’ Kilrain: Well, if you mean the race, I don’t really know. This is not a thing to be ashamed of. The thing is, you cannot judge a race. Any man who judges by the group is a pea-wit. You take men one at a time."