On July 4, 1961, the rising middle-class families of a Chicago neighborhood gathered before their flag-bedecked houses, a vision of the American Dream. That vision was shattered over the following decade, its inequities at home and arrogance abroad challenged by powerful civil rights and antiwar movements. Assassinations, rioting, and the blowback of a "silent majority" mobilized by an emerging right, left a fragmented political landscape. Kevin...