Sending people back who came illegally while people all around the world are waiting to come legally has zero in common with Nazis.
Besides, many people like to believe they are the “good guys”.
"Sending people back who came illegally [is OK]" is a thinly disguised argument of that same form because we are the ones who decide what is legal. In that respect we are like the Nazis. They thought that what they were doing was OK because it was "legal", because they were "just following orders." Well, no, it was not OK. And deporting people who grew up here "illegally" through no fault of their own but rather because their adoptive parents didn't fill out the right paperwork and xenophobia happens to be running amok is likewise not OK no matter what the law says.
That is certainly true, but Trump has said much more than just calling for law-and-order (which, by the way, is a very loaded term in American politics: the phrase was first used by Richard Nixon as a deliberate code phrase intended to signify solidarity with southern white racists in the 60's). He has also, for example, called out Mexicans for being "rapists" and called for a "total ban on Muslims entering the U.S." Comments like those are xenophobic. The combination of xenophobia and law-and-order is very reminiscent of early Nazi rhetoric. That doesn't necessarily make Trump a Nazi, but it does make it not entirely unreasonable to raise the question.
http://www.npr.org/2016/07/28/487560886/is-trumps-call-for-l...
Trump probably did not intend "law and order" to be a coded racist message. His profound ignorance almost certainly does extend to this branch of American political history. But that's irrelevant. A loaded term is loaded whether or not the speaker intends it to be. Nixon denied it too:
"Nixon publicly denied that the phrase was a code for racism — the very accusation implied a "reverse racism," he said, as if the critics were suggesting that "the Negroes" didn't want law and order, too. But the message was clear enough in Nixon's references to a "city jungle" that threatened to swallow the affluent suburbs. His TV ads showed a middle-aged white woman walking nervously down a city street at night, where the assailants who might be lurking in the shadows presumably weren't hippies or demonstrators."
That is certainly true, except for two things. First, the phrase "law and order" is a loaded term in American politics. (See https://en.wikipedia.org/wiki/Law_and_order_(politics) And second, Trump has made many xenophobic statements, both implicit and explicit. He called out Mexicans for being rapists. He called for a "total ban on Muslims entering the U.S." He failed to distance himself from endorsements by white supremacists. These things do not make Trump a Nazi, but they do make it fair to draw attention to the similarities.
Dwight Eisenhower and John F. Kennedy invaded, proceeded to rounded and murder and otherwise caused the death of up to 3.1 million Vietnamese in the Vietnamese Resistance War against America.
Roosevelt, Eisenhower, and Kennedy are literally Hitler.
Clearly not. But neither are they the unambiguously virtuous "good guys" that Americans like to imagine that they are.
Let's stop taking everything to extremes. Will a Trump presidency lead to mass executions of civilians in gas chambers? Probably not. Will it lead to innocent people -- mainly Muslims and people with dark skin -- being deported, separated from their families, tortured, and killed? Very likely. Trump has explicitly promised to do all of these things, and I see no reason to doubt him on this. Do I think it will happen to me? Probably not, but that's only because I'm a rich white guy. But I take little comfort from that because once xenophobia takes root it tends to grow like kudzu. I'm a rich white guy, but I'm also Jewish, so there are absolutely some Trump supporters who would like to see me go back to where I came from along with the Muslims, the Mexicans, and the niggers. The best way to keep those people out of power is to keep Trump out of power. And if pointing out the parallels between Trump and Hitler helps to do that then Godwin be damned. Sometimes the Nazi shoe fits.
[UPDATE:] FWIW, it's not just me making this argument:
http://www.alternet.org/election-2016/trumps-mass-deportatio...