This song is my most vigorous sense of motivation I've ever gotten from music. I'm talking exponentially greater than anything I've ever felt from anything else and I don't mean to diminish that notions original existence prior to hearing this.
Jayant Bhadula does the metal voice in Hindu. Raoul Kerr does the Hip-Hop in English. You may then have to read the translations in these videos. The work on such was done well. Their words resonate well enough with me, that I went to see 'em live a couple times.
I also recommend Gaddaar and Machi Bhasad as THE voice of the revolution and the rest of what they made but I'll leave it at that since I'm pretty much already driveling.