Random cart full of cans... This is probably how this person will pay for food, or shelter. They more than likely put in longer hours, and work harder then most will, just for cans. Cans make this person who they are, and what they are to become. Something as simple as an aluminum container, drives this person to pay rent, buy subway tokens, and feed their family.
Just think, you wouldn't look twice or notice this on your daily commute to wherever you may be going. These are the common struggles that the "average" person doesn't see. I say pay attention and look harder at your every day. You will be amazed at the things you are blind to.