Hitler came to power in 1932 as a result of the Enabling Acts. Hitler never had more than 37% of the vote in any election.
The death camps didn't come along overnight. It took 7 years of increasingly more brutal and authoritarian rule and massive campaingss of propaganda and fear before the Holocaust was government policy.
Trump isn't to Hitler's level yet. He is just as insane. We know exactly where he wants to take the country because he has told us so. Thankfully we've learned enough from history not to repeat it, but to stop him now, before he becomes a dictator.