Could Democrats really be this tone deaf? For nearly two weeks, Team Obama has been reeling from his "you didn't build that" comment --- to the extent that Barack Obama himself had to cut a personal response ad to stanch the bleeding, so far to no avail. And yet, the Charlotte Observer picks up on a Boston Globe report from ten days ago that the "buzz" around the Democratic convention (such as it is) has the author of that argument, Senate candidate Elizabeth Warren, under serious consideration to be the keynote speaker at the DNCC: The crowds at political conventions...