This image is really defined by the space in which it was taken and the light. Courtney really only defines the space the dancers are in with one moment, the squares of light at the beginning of the piece. For the rest of the piece the lighting will help to focus the audiences' eye on the movement of the dancer and the unity of their struggle while making the space it takes place in unimportant.
This lightscape, created by the street lights, gives a sense of foreboding and ominous-ness. It actually reminds me of the beginning of the first Harry Potter film when Dumbledore arrives on Privet Drive and catches all the street lamps. In this scene, however, I imagine much more shady characters about, like drug dealers or other criminals, people who are p to no good.