But this one is not so apparent. I spent a couple of seconds trying to figure out what OldQuestion tried to tell us. Ok, the poor & the rich, the motorist & the biker. There are another strong comparison here, the shadow vs. the bright. You picture does show both of Shadow & bright, but in a anrelated way. In addition, it seems to me that the two guys at left knew you were shotting at them, if that's the case, why don't you just tell them to move forward to the bright place under the sunshine. This will build more contrast, I believe.
For the same reason as I said before, I have to type English only, coz I am at work, don't want to be found out by my boss. Folks, sorry for this. :P