Sure, a few malcontents might get angry and try shooting at someone. It only takes one angry person to pull off a successful assassination, as we just saw in NYC. A couple of other angry people shot at Trump on the campaign trail. But that wasn't related to his popularity, since he won overwhelmingly in the election afterwards.
I suppose the rich people are probably going to need to hire more bodyguards, so this might be a good time to buy stock in a security company.
"Imagine how dumb the average American is, and then remember that half of them are stupider than that!" --George Carlin (paraphrase)
I think Donald Trump is a stupid person's idea of a mean person, who's mean to the people they want to be mean to.
We had something similar in George W. Bush. Nobody thought he was smart. People often said that he was preferable to have a beer with. That hardly seems like a good reason to be President, but it was remarkably popular. Like Trump, he did eventually win an election by popular vote, not just the Electoral College.
I have a dark suspicion that for a great many of his voters, they think he's in fact quite stupid. And that's what they want.
And other things. The B part is the least worrying.