Trump is certainly an incendiary demagogue. Even a lot of people who support him – at least nominally – admit to that. A lot of his support, especially the most rabid, vocal – and stupid – want him for that very reason. He says things that have not normally been said in American politics (at least since the 1930s or so). Never mind whether most of those things should remain unsaid for the most part. His hands are certainly not clean, but so far all he has done is to speak. Except for some minor contretemps at the edges of the campaign – which happen in all major campaigns from time to time – and which he has attempted to downplay or explain away, all he does is speak.
A lot of those who oppose him, including those from the Republican party as well as, one presumes, all Democrats and a lot of Independents and Libertarians, etc., are tone-deaf in the way they voice that opposition, and who speaks the opposition, and how.
When John McCain, Mitt Romney and other “perceived losers” in what is called the “Republican Establishment” – especially when they have been perceived as collaborating with Obama’s agenda of the past seven years, or insufficiently opposed to it, Trump’s support rises. “The wrong Republicans” opposing him means that his supporters take heart, and he collects more of them. Those Trump supporters have grown tired of listening to Republicans who seem too much like Democrats.
When various Democratic and other liberal groups oppose Trump, that also helps to solidify support for nearly any Republican. As Trump takes over more and more of the party, that support shifts to him – generally.
When various celebrities “promise to leave the country if Trump is elected” and one moron even promising to leave ‘if a Republican is nominated’, people who may have been on the fence think, “Well, damn, if it’ll do that, then he’s getting my vote!”
Now, when various Democratic-leaning know-nothings such as Black Lives Matter and others of their ilk start to violently oppose him and attempt to shut him down? Are you kidding me? All I can think when I see this is: “Do you want a Trump presidency? Because that’s how you get a Trump presidency.”