I'm thinking that these guys just realized they are in the Matrix and that they can move in slow motion and dodge bullets. Either that or they've got two cameras going here. One that is recording them that they speed up and slow down, and another on the crowd that they keep playing at normal speed.
That, or these guys are just amazing poppers.
This article originally appeared at: https://www.youtube.com/watch?v=2jXjEEIOduA&feature=em-subs_digest.