Lyric discussion by my nothing 

'Prejudice burns brighter when it's all we have to burn' That's about how most Germans could swallow Hitler's lies about Jews because they were in a bad state economically. Poverty is a golden oppourtunity for fascists.

I had always felt this line was about showing how bigots have otherwise empty lives/minds and that their constant need to denigrate blacks/whites/jews/whatever was due to their lack of understanding of the wider world and their own place in it.

More concisely, prejudice is all they have so that's all you hear them shout about.

Your interpretation makes more sense though.

An error occured.