Besides that, the people responsible for violent crimes will very likely be prosecuted and harshly punished. The message "go home peacefully" is irrelevant for those people and is probably intended for everyone else. Looting is bad, but it's "jail time" bad and not "undying hatred" bad. It's okay to show some compassion to looters while telling them to change their behavior.
Yes, after four years of the Trump administration, this is what we'll scratch our heads about. This is what will seem strange and surreal and irrational. Absolutely.
I'm not sure of this, but I have a hypothesis that you're misunderstanding the Trump phenomenon.
Here's the idea to consider: Trump was sincere! Trump is basically always sincere. Even when he contradicts himself in a matter of minutes. He is a master bullshitter who grew up going to Normal Vincent Peale's church. His entire life is built on the idea that it's all a stage, all a game. The RESULT of that is: he's extremely practiced at coming up with stories and convincing himself. In other words, self-deception. He knows he's bullshitting, but he doesn't think a reality beyond bullshitting exists. He believes what he says all the time. That's why he doesn't give the normal tells that indicate shifty lying and deception. Unlike the other politicians who are obviously being calculating and withholding their real thoughts, Trump is transparent. He's saying exactly what he actually thinks, and even when it is complete oxymoronic, he experiences no cognitive dissonance. He's not really lying in the normal sense, he's delusional.
Trump is the ultimate self-deceiver. That's why his followers find him so appealing. He's authentic in that you can tell he really does say what he thinks and doesn't hold back. It's just that his mind is so constantly focused on whatever will get people to like him and otherwise what serves his interest, the content of his beliefs is similar to what it would be if he were consciously being deceptive. But if he were concerned about his stories being consistent and believable in content, he'd get all nervous and seem more like a liar. He's able to talk with sincerity because he doesn't care if his stories make sense, even as bullshit he still believes them for himself, at least enough to say the things in earnest.
Of course, I don't really know, but this would explain part of how it's possible for so many people to have still seen him as honest despite the plainly factually wrong things that come out of him.
No, you should attack the strongest interpretation of my argument, which is that banning communities only lead to them regrouping and becoming even more polarised and radical.