Richard Nixon was, of course, an extremely divisive figure. He clearly despised his enemies; he even made a list of them. He understood, however, that part of his job was to try to keep the country united at the height of the culture wars. If you listen to some of his speeches today, he even comes across as being sincere.
Trump is different. When he talks about national unity, he sounds like a child who has been told that he has to eat his vegetables. Dividing the country comes naturally for him, because: (a) he has no other political skills; (b) it’s a lot more fun than mouthing platitudes about unity; (c) he values loyalty over every other quality, including competence; and (d) his temper and thin skin almost always get the best of him.
The whole point of his campaign was to expose the divisions within the GOP. Things are worse today. Don’t expect any improvement in the near future.