A pandemic unabated, an economy in meltdown, cities in chaos over police killings. All our supposed leader does is tweetYou’d be forgiven if you hadn’t noticed. His verbal bombshells are louder than ever, but Donald J Trump is no longer president of the United States.By having no constructive response to any of the monumental crises now convulsing America, Trump has abdicated his office. He is not governing. He’s golfing, watching cable TV and tweeting.How has Trump responded to the widespread unrest following the murder in Minneapolis of George Floyd, a black man who died after a white police officer knelt on his neck for minutes as he was handcuffed on the ground?Trump called the protesters “thugs” and threatened to have them shot. “When the looting starts, the shooting starts,” he tweeted, parroting a former Miami police chief whose words spurred race riots in the late 1960s.On Saturday, he gloated about “the most vicious dogs, and most ominous weapons” awaiting protes...