Donald Trump says he is “exactly the opposite” of Adolf Hitler

Kelly also said that Trump said more than once, “You know, Hitler did some good things too.”

Trump and his supporters said Kelly wanted revenge for his firing.

In an interview with Fox News Channel's Bill Melugin, Trump said: “I fired him. He was a tyrant. He was a villain and a weak guy in the end because all bullies are weak in the end. And he wasn't a smart guy. That's a bad combination.

Opponents said voters should consider the source of the allegations against Trump.

On his personal X account, Transportation Secretary Pete Buttigieg said, “It’s one thing for a left-wing group to call you a fascist. It's completely different if it's a fellow Republican. And absolutely amazing when it’s your own chief of staff.”