BALTIMORE - The immense new CVS dominates the corner of Pennsylvania and West North avenues. It's a contrast that shows what's changed and what hasn't in the past year, since Freddie Gray, a 25-year-old black man, died of injuries sustained in police custody, unleashing days of protests. But if 2015's protests emphasized police brutality and race relations, the absence of more stores like CVS that are easily accessible to people in impoverished, predominantly black neighborhoods underscores Baltimore's other persistent inequities. Scarcity defines life in Sandtown-Winchester, the 72-block neighborhood where Gray lived for part of his life. Its roughly 9,000 residents...