Denotation and connotation

In this water aid advert,the denotations are: a dirt wall with the title saying dig toilets not graves,another denotation is a young boy not smiling. Another denotation is in the back ground you can see sand and a tree and some sort of thatch/wooden hut all blurred out.The connotations of the young boys facial expression maybe that he is sad as he does not seem to be smiling. The connotation of the dirt wall behind him may suggest that the boy is living in poverty.The title dig toilets not graves could link back to why the boy may not seem so happy as he may have had to dig graves for is family or someone he knew,the title also suggest that where they young boy lives they do not have proper toiletry which would link back to him living in poverty.The producers wants to convey to their target audience that they should not be digging their own graves but give digging their own toilets.