Everyone’s praising the attorney general's response to the Ferguson crisis—and rightly so. But before ripping the president's response, it's worth noting that Holder's there because the president put him there.After saying, two Fridays ago, that “President Obama failed in his leadership to say what he really knows and has lived as a black man in America”; then saying, a week ago on Face The Nation, that the president “needs to step up to the plate and be responsible”; and writing, Friday, in the Washington Post, that Obama is “a sometimes unreliable and distant narrator of black life,” Georgetown University’s Michael...