Yes, they are.
The US has at best stood idly by as other countries have been forced to live under the thumbs of murderous psychopaths (and all too often has been at least partially responsible for it), but now we're about to discover first hand what it's like.
The only saving grace of Trump's first term was the notable gap between what he wanted to do and what he actually could do, and this time around, he's even more bitter and spiteful and unhinged, and with the help of his patrons and cronies, has deliberately arranged things so that nobody can stand in his way.
I'm quite seriously not going to be the least bit surprised if he ends up up on the short list of all time mass murderers, right up alongside Stalin, Mao, Hitler and Pol Pot. I don't think it's a question of whether or not he would do it - he most definitely would. The only question is whether he'll be able to.