The powers-that-be in 1920s auto racing, namely the American Automobile Association's Contest Board, barred everyone who wasn't a white male from the sport. But Dewey Gatson, a black man who went by the name Rajo Jack, drove into the center of "outlaw" auto racing in California, refusing to let the pervasive racism of his day stop him from competing against entire fields of white drivers. In The Brown Bullet, journalist Bill Poehler uncovers...