There are many things incomplete in this image, none of which detract from the content and our interpretation.
We know what a ball looks like, even if we only see part of it. We know what children do with a ball; they chase it 'furiously' and we don't need to be told that as we look at the photograph.
There is other incomplete content we can interpret. The condition of the housing indicates squaller as does the condition of the road. The guard (barely shown) tells us of a troubled place when there is the apparent need to protect what appears to be a sub-station, also heavily barricaded and fortified.
We might consider the untold story here.
How is it that children still play in the streets, seemingly oblivious to the surrounding. We might see this as happiness in spite of the deprivation or we might see it as futility.
The image is clear but the content and context blurred. The timing seems awkward but that's all we can do; be poorly prepared in the light of what happens around us.
Perhaps our consciousness is pricked by what we see yet all we can do is reward the photographer.
Such is the way of the photograph.