Maybe it's just me, but to me this one picture does tell a story, but different from what most here are saying.
I see he has a child with him. But the sign has no mention of 'us', so I think either it may be an old sign used when the child isn't there, or maybe the child isn't his but a nephew or niece.
I see that the child is playing, not just sitting around looking drawn and starving. So I really wonder just how desperate the man may be. Even more, i wonder why he has the child on the street with him at all.
I also see a full cigarette in his hand. Goes to show his priorities.
So, to me, I think this is a picture that does tell a good bit of the story. More would be helpful of course, but I think it is a pretty well framed picture, that if anything could be used to make a point, on either side of the aisle.