I think the guy was already dead while the responders were walking around. You can't see what's going on at their heads because of the bridge. You just see one set of legs being very still while the others move around a bit.
Also, to me . . . it looks like both the dudes were naked. >.>;
If you watch the bottom lefthand corner of the video, loooong before it zooms in, you'll see a cop whip out his gun and move quickly in. I think that's when the guy was actually shot.
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