If you watch the background, you'll see one guy has hits pants change color. And also, some of the guys are absolute giants compared to people around them.
Really makes me think of The Matrix scene with the woman in the red dress.
Can't tell if they did this on purpose to freak us all out?
Are we all just prompts?
The people behind her all walk at the same pace and seem like floating. The moving reflections, on the other hand, are impressive make-believe.