"Shackle their minds when they're bent on the cross When ignorance reigns, life is lost" Religious fanatics prey on the minds of those who are lost or weak. These people get brainwashed by their religion and can't see faults in what they've been taught to believe. They turn into dangerous fanatics. Ingorance causes people to kill, in the name of religion.
"Why stand on a silent platform? Fight the war, fuck the norm" This is urging people to dare to have an opinion and voice it. Whether he's saying actually join in the war, or fight against the war, these are brilliant lyrics because they're relevant so many years after the song was written.
"Our freedom or your life" This is voicing the frustration of all oppressed people. They can only withstand for so long before they have to resort to violence.