What does the song help is on the way by rise against mean?

Rise Against's song "Help is on the Way" is about the effects of Hurricane Katrina and the gulf oil spill on the gulf area, and how poorly these catastrophes were handled by the U.S. government. Millions of people who lost their homes were assured that soon enough, assistance would arrive, only to have this promise left unfulfilled. "Help is on the way they said... but it never came."