As far as I know, your comment is wrong. Many Republicans have openly repudiated Trump and racial/ethnic/religious discrimination. If you mean that Trump won nearly half the vote, remember that Trump is extraordinarily unpopular - IIRC around two-thirds of Americans strongly dislike him - and not every one who likes him will support all his policies. Also, about 40% of Americans don't vote.

Finally, I strongly believe the great majority would do the right thing, believe in the golden rule, and object to hurting others. They need to be manipulated into supporting oppression through fear and propaganda and through dehumanizing the victims.