Hitler had his fanatical supporters too, as did Mussolini, Stalin, Napoleon and many a dictator...etc. It doesn't mean their heads were screwed on right at the time but Trump has his blinkered supporters raving in the streets now as did Hitler, Mussolini, Stalin, Napoleon...etc then.
Trump is attempting to grab Greenland and Panama and has also hinted at Canada becoming the 51st State - does that land grab sound familiar?