Tony Simmons leads a group of Johns Hopkins University students on a "justice walk" in downtown Baltimore, during which they learn about public policy, providing services, and the connections between income inequality and health. Gabriella Demczuk for NPR hide caption

itoggle caption Gabriella Demczuk for NPR

Erika Kalberer (left) and her mother, Kris. Their family has been living in their car. Kris tells her daughter, "I don't think sometimes you know how strong you are." StoryCorps hide caption

itoggle caption StoryCorps