This is a great capture and a real challenge but I dont know about the conflict subject. The shot is a litle blurred and unsharp and the tonal balance could be better. I also think that more croping would have made this shot better.
I like this idea for this conflict. I think what would set this photo apart (and I know it's difficult with action shots like this -- is if you cropped the photo around where the guy is falling and made it bigger. The composition is lacking a subject and a balance and you have to really look to see what's going on.