Lyric discussion by TheMadTimes 

Cover art for O Children lyrics by Nick Cave and the Bad Seeds

Firstly, ChamomileCourier... you're so correct. This was perfect in Harry Potter. The tone totally works!

Secondly, I'd like to put in my first interpretation of the song when I first heard it. Right when I heard gulag, I thought of concentration camps, or something of the sort. And I practically cried when I heard this part, connecting it to the Holocaust immediately:

"Hey little train! We're all jumping on The train that goes to the Kingdom."

The train, in my opinion, refers to those trains that brought people to and from concentration camps. "The train that goes to the Kingdom" meant to me as the train that would bring them to their death, to the Kingdom of Heaven.

The rest of the lyrics that seem to mean they're having a good time ... they make me think, kind of. I could see someone saying that they're doing great when they obviously aren't, just to not worry they're loved one -- in this case, being Ma.

And another thing:

"Hey little train! Wait for me! I was held in chains but now I'm free I'm hanging in there, don't you see In this process of elimination."

In this process of elimination?

A few more examples came to mind, especially the mention of guns and gulags, but these are a few of my major ones that really stood out.

My Interpretation