The last resort of someone who has no argument is to declare everyone who holds an opposing opinion to be a "racist," as if this obviates the need for any further consideration.  According to a recent poll, 2/3 of the citizens agree with the sentiment expressed, however crudely, by Trump.  Yet somehow this country twice elected a black man as president.  That should be enough to overcome your sadness and embarrassment with a good case of cognitive dissonance.