I think there's a difference between searching records of citizens based on race to send them to death camps, versus cracking down on employers who are employing illegal immigrants under the table while trying to stop illegal immigration. I'm no Trump fan and cringe daily at him, but these aren't as similar points as they are made out to be - there are better arguments to be made. While vigilance is good, I think it's facile to always compare any leader we don't like to Hitler (and yes, it also was when people were comparing Obama. And Bush.)