The Saints are Coming Lyrics Meaning

The song is not about hope. It was pure, cheap white heat on the part of U2 and Green Day. It was recorded for charity and to entice the masses into buying it.

It is about the death of the singer's friend. He can do nothing to change the fact as the Saints and Angels are taking his best friend away.

Aside from adding the bit from "House of the Rising Sun" there are no additional lyrics regarding Katrina unless you consider Bono reading off pleas for help "lyrics".