I like what Jamelle Bouie is saying here, but regular observers of Trump have been warning everyone about these things for the last decade or more:
Trump is not a steady hand. He’s never been one. Three years in office have neither changed his character nor enhanced his capabilities. He is as ignorant and incurious as a president as he was as a candidate (and as a would-be mogul before that). His main goal is self-preservation, and he’ll sacrifice anything to achieve it. His current assault on the authority of Congress — his refusal to have the White House or members of his administration release documents or obey subpoenas — is an attempt to escape responsibility for his own unethical (and potentially illegal) actions. He is self-involved, unethical and unstable — a dangerous combination to have for the commander-in-chief of the world’s most powerful military forces, under pressure from impeachment and a re-election campaign.
I think most observers know this. But the implications are terrifying. They suggest a much more dangerous world than the one we already believe we live in, where in a fit of pique, a single action taken by a single man could have catastrophic consequences for millions of people. This isn’t a new observation. When he was still a rival — and not one of Trump’s most reliable allies — Senator Marco Rubio of Florida warned Republicans that they shouldn’t give “the nuclear codes of the United States” to an “erratic individual.” Hillary Clinton said Trump was “temperamentally unfit to hold an office that requires knowledge, stability and immense responsibility” and that “a man you can bait with a tweet is not a man we can trust with nuclear weapons.”
If you were vehemently opposed to Trump before he even announced he was running for president, then you understand the argument here. The country, and the world, should be horrified to have him in charge of anything, let alone the presidency. Hillary Clinton was as right about Trump as anyone could have been. The 65 million people who voted against him were right as well. The world that opposes Trump, they were right. The people that have died as a result of his unstable, demented presidency aren't able to speak up, but they were caught up in all of this.
We should all be cognizant of the fact that Trump's approval numbers are stuck at an absurdly high (but incredibly unpopular) level. There really are that many Americans who are supporting him for the nationalism, the racism, the ignorance, the stupidity, the venality, the viciousness, and the shock value.
They do not care about their communities, the country, the wellbeing of others, and the fate of the world. They just want to watch it all burn, and they are big, big fans of stories where innocent lives are destroyed.
Never underestimate the abject cruelty of the Republican next door. Vote accordingly.