Marta gets up at 3:45 a.m. each morning to ride a combination of buses and metros to get to her job in the cafeteria in the building where I work. Breakfast begins at 6:45 and she’s always there, ready to ring up my coffee and oatmeal. She’s the face of the working poor in Washington, D.C., who must risk their safety to walk to work through homeless encampments where angry, raving homeless men accost and shout at them.