When will liberals stop living in the past? Specifically, when will they accept that they aren't all that stands between a wonderful, tolerant America and Jim Crow? I was in the room when, during the Democratic convention, civil rights hero John Lewis suggested that Republicans wanted to "go back" to the days when black men like him could be beaten in the street by the enforcers of Jim Crow. I thought it an outrageous and disgusting bit of demagoguery. The audience of Democratic delegates cheered in a riot of self-congratulation. It's bizarre. I spend most of my time talking or...