I really like this picture because it reminds me of a baroque painting. There is something going on in every corner. From the guy hanging upside down (which is the centerpiece in my opinion), to the different people looking over at him. My favorite part is the newspaper clipping that says "Subway maniac incidents soar." That's too perfect of a headline for the situation.
The guy hanging upside down might be doing some kind of performance on the subway. That's pretty common, and very annoying. Since no one can leave the subway, they make for the perfect audience. They have to watch the performance, thus they have to pay you for the performance. I hate that. If I didn't specifically buy tickets to your performance, I don't want to have anything to do with it.