Clyburn shouldn't be comparing Trump to Hitler. That's just over the top in my opinion. However, let us not forget that a few Republicans compared Obama to Hitler. I don't remember hearing a peep out of Oldsport when that occurred.
Which is why we've hardly gone a month throughout this presidency without someone comparing Obama to Hitler, on matters both weighty and mundane. He had only been in office a few weeks when Glenn Beck started comparing his program to that of the Nazi party. "Adolf Hitler, like Barack Obama, also ruled by dictate," said Rush Limbaugh in the summer of 2009, just a few months later. Conservative commentators saw swastikas in Obama's push to register new voters in 2008, and even in his campaign slogans. Conservative favorite Ben Carson says the government under Obama is "very much like Nazi Germany," because "[y]ou had the government using its tools to intimidate the population. We now live in a society where people are afraid to say what they actually believe." And that's not to mention all the times some billionaire has compared Obama to Hitler for such appalling things as proposing to close the carried-interest loophole.
Not as far off as you think:
Hitler blamed non-whites for the country's issues.
Hitler demonized the Jews.
Hitler thought he knew more than his Generals.
Hitler was the smartest man in the world.
Other leaders could not trust Hitler.
Hitler broke treaties.
Hitler lied all the time.
Hitler was a master of Propaganda.
Hitler removed people who did not agree with him.
Hitler refuse to take advise from others.
Who else behaves like that?