Former President Joe Biden told mourners at Rev. Jesse Jackson’s memorial service Friday that he is “a hell of a lot smarter than most of you,” a pointed remark that stood out during his tribute to the late civil rights leader. Biden made the comment while recounting how he was mocked as a child for his stutter and how speech impediments are often mistaken for a lack of intelligence. “If I told you I had a cleft palate or clubfoot, none of you would have laughed,” Biden said. “But it’s OK to laugh at stuttering. … It’s the one place...