Ballad of the Bread Man

Studying Best Words for English Literature GCSE? A bit confused as to what's going on in Ballad of the Bread Man and what the main messages are, and what exactly Charles Causley is trying to portray? In Year 8, my class made a video in our drama lessons on the poem. It might help, it may not.

PS: You needn't worry about following it along in your book, because the video is of the poem in full.