In her keynote speech to the Democratic national convention on Monday night, Michelle Obama reprised a message from the 2016 campaign in which she urged Democrats not to take Donald Trump up on his insults and mockery.“When they go low,” she said, “we go high.”On Tuesday morning, Trump duly went low, attacking Obama after she said he “is clearly in over his head” as president.“Somebody please explain to Michelle Obama that Donald J Trump would not be here, in the beautiful White House, if it weren’t for the job done by your husband, Barack Obama,” Trump tweeted. “Biden was merely an afterthought.”Trump went on to accuse Barack Obama and Joe Biden, the former vice-president whom Democrats will officially nominate for president this week, of “treason”, then attacked Michelle again during a White House ceremony marking the 100th anniversary of the 19th amendment, which gave women the right to vote.“She was over her head,” the president said, “and frankly, she should’ve made the speech live, which she didn’t do, she taped it. And it was not only taped, it was taped a long time ago, because she had the wrong [coronavirus] deaths and she didn’t even mention the vice-presidential candidate” – Kamala Harris, named by Joe Biden last week. Trump also complained about the former first lady receiving “fawning reviews” and said he thought her speech was “extremely divisive”. Obama delivered the climactic address on the first night of a four-day convention produced in Milwaukee, Wisconsin but playing out almost exclusively [More]