You have to maximize the size of the video to clearly see it.
You can see 3 bodies at the very beginning. Then as the video moves you see 4 or 5 more dead bodies. You have to maximize the video in order to see it. I had to replay it to a few times to count.
http://www.liveleak.com/view?i=417_1431900525
I don’t see any “bodies.” If you look you can see they have their hands out on the ground before them like they have been ordered to lie prone. If you watch it enlarged you can see a couple of them moving. Maybe they later died, but it doesn’t look like bodies.
One difference may be that the rioters in Ferguson and elsewhere were allowed to riot whereas these bikers were shot dead. At this point, we don’t know how many of the 9 dead were killed by the police as opposed to other bikers, but I have seen references to the number being at least 4 (would not surprise me if it is more).
The bikers on the ground, on their stomachs, arms outstretched don’t appear dead?