When Sherri Luna rammed Jerry Kruger’s crew cut head into the handball court wall at Kester Avenue Elementary School on February 15, 1964, I knew she loved him, a swirling, butch, embarrassed sort of love that denied itself even as it was expressed. She loved him the way a 9-year-old, beefy-ankled, white-socked, scuffed-up saddle-shoed, Valley...