By her husband’s logic, Michelle Obama must be a heavily armed xenophobic religious zealot, because boy is she bitter. This C-SPAN video of a speech delivered by Mrs. Obama in North Carolina last Friday is characteristic of her peculiar recent performances on the stump. It is an hour-long talk to supporters who just want something to cheer about, and who get some opportunities at the outset, but then find themselves treated to a profoundly and relentlessly negative vision of American life.