.Gotta go with Kut on this one. Racist is a proper subset of prejudiced
Someone saying "I don't like black people" or "I don't like deplorables" has written off people based on shallow external characteristics, they don't acknowledge the individual may not conform to their pre-judgement were they to take the time to get to know them
Someone saying "I don't like black people because they are inferior and are polluting the white race by miscegenation" is racist, he considers his own race to be superior to that of the other