The Amazon founder bought the paper to save it. Instead, with a mass layoff, he’s forced it into severe decline.Photograph by Kent Nishimura / Bloomberg / GettyOn September 4, 2013, the Amazon founder Jeff Bezos held his first meeting with the staff of the Washington Post, the newspaper he had agreed to purchase a month earlier from the Graham family, for two hundred and fifty million dollars. It had been a long and unsettling stretch for the paper’s staff. We—I was a deputy editor of the editor...