In the memory, she is 8 years old, prettied up in barrettes and beads and new clothes, fly-girl fancy. She stands in the sunshine, preparing to step from a Knoxville sidewalk into a family friend’s car. Driver and passenger are about to road-trip from eastern Tennessee to South Florida. Jameerial Johnson, now 24, wonders still how her little girl self would have looked in her father’s adoring eyes on that day more than 15 years ago. “I just wanted him to see my hair. It was braided, with little curls hanging down the sides. I was going to the beach. And I wanted him to see me.” He, tho...