What is the deeper meaning of the following poem?

"subway"

i thought that if he could stoop
to pick out rubbish, each piece
placed in his bag--a tedious job
in front of crowds, all day
the trains at a steady roar,
the lighting dim, the air stagnant--
from bin to bin, searching
to the bottom for gum wrappers,
crumpled newspapers, torn sandwich
bags, cigarette stubs, particles
clinging to his fingers. all this
without a word, bending
at the foot of a steel pillar,
it was not too much for me
to be witness.

hmm, sadly there is no dialogue. there is no place in the story where he is talking to anyone. it's more of just describing what he eats and where he sleeps. you have to become anne frank, give details of where you are, what other folks look like, how the environment is. have a little bit of dialogue tell of what people are specifically saying. anne frank talked about her entire household including the people, the objects, the lighting, the food they ate, and even the smell in the air. there has to be more to your diary entries, the whole story in its current state is only about peter van daan, the food, the sounds, and where he sleeps. also he seems to be writing only once a year yet more than that happened from day to day. for a friend, i can you write it out, if you want.

the noun in this is person