New York Times – Donald Trump is the internet troll of presidential politics. When he’s securely removed from the objects of his scorn, he’s tough as nails; when he’s in their presence, he quivers like a bowl of Jell-O.
Such is the way of a bully.
Furthermore, when he is surrounded by supporters who cheer his base nature, he amplifies the enmity. When the applause of hostility is out of earshot, he tones down his vitriol to a whimper.