From the photographer: "I had to hide in plain sight to get these shots. It’s hard to blend in when you’re standing still with a camera in the middle of a moving crowd. Four times the police asked me to stop shooting, as I had no permit. But a few times, officers noticed me and even posed for my shots, so I knew it wasn't a serious offence, and I just kept shooting. It was a bit of a cat and mouse game. Who exactly was watching whom, I can't say. Over a few months of shooting, using a monopod to take these exposures of a few seconds, I captured the spirit of those who passed before me in a blur of shadow and light. Often, strangely, their footsteps are still recognizable. " - Joel K