This may be a bit “meta” but one of the concerns I have about Trump is the longer-term damage he is doing to the country by shifting the Overton Window massively to the right.
It is not bad enough that what he is saying is intrinsically offensive, and dangerous. It is not bad enough that he is shaming us in front of the rest of the world.
It is not bad enough that he is legitimizing Daesh’s ideology by acting out precisely what kind of demons they say we are.
It is not bad enough that he is re-enacting Germany 1928.
To top it off, and this is my concern, he is poisoning the well. By his speech, and his repetition thereof, he is dragging the rest of the clown car with him. And making ideas that, were it not for his speech, would be considered beyond the pale, somehow acceptable because they appear less draconian, less preposterous, than what he is saying.
He is creating room for the worst ideas of the Republican party PRIOR to Trump, to seem reasonable.
And that may be the most lasting danger of the Trump candidacy.