Lyric discussion by 4four 

Cover art for Black Dog on My Shoulder lyrics by Manic Street Preachers

I feel that the line "Winston Churchill, can you hear my voice" is a bit too forced to work in this song. He obviously wanted to leave a clue as to what the song was about. The problem is that the clue is not likely to lead anyone to the answer, but if you know about the Churchill Black Dog quote it is not necessary to include the line. A bit like using a hammer instead of using subtlety like the rest of the song.