The artist has used a lot of shading in some parts of the picture, there is one main focal point which is the bird(s). The focal point is the lightest part of the photo and the rest has been put into darkness.
During the 1920's, people were becoming more and more creative on smuggling booze into the country, and other crimes came with it, creating organizations of crime
When trying to convey the thoughts and feelings of immigrant laborers in the early 20th century, it would be best to read a narrative type of passage, due to the story.