AH! One of the most creative so far IMO. I think cropping about the truck on the left would isolate would do a lot. I think the white of it kind of ruins the nice mellow contrast in this B&W- and it takes the eye away from the white on the man's shirt. Well done.
I'm having trouble seeing the message in this picture. I see the work of art on the wall, but I don't understand what that has to do with the trash mover. Nicely shot though! Great in black and white.