In no particular order, four Hitler-related things reported about Donald Trump and his family by Marie Brenner for Vanity Fair in 1990:

1) As an in-joke, Jeffrey Walter, a cousin and Trump Organization employee, would click his heels and heil whenever he visited Trump's office.

2) According to Ivana Trump, Trump liked to read a book of Hitler's speeches before bed.

3) When confronted about the book, Trump instead claimed he owned a copy of Mein Kampf, and that it was given to him by a Jewish friend. Later he said, “If I had these speeches, and I am not saying that I do, I would never read them.”

4) The Jewish friend, who is not Jewish, says that he gave Trump a Hitler book, but it was the book of speeches, not Mein Kampf.

"It is the disease of the so-called 'lost generation.'" Dorothy Thompson's 1943 essay "Who Goes Nazi?" proves as relevant as ever. There are Nazis among us, and it's a fun game to play.

Fred Trump instilled in his children a belief in a "racehorse theory of human development," Trump biographer Michael D'Antonio says in the Frontline documentary The Choice. "They believe that there are superior people and that if you put together the genes of a superior woman and a superior man, you get a superior offspring."

Trump himself often refers to his good genes, favorable German blood, and how winning is something that people are born with.