If you happen to watch it, note the point made by one interviewee (with spectacles and a gray goatee) that, insofar as "there is always a time lag" between a protest movement and its manifest impact, the value of persisting in protest must, to some extent, be "taken on faith" (ca. 1'32"). So much for secular progress by "purely political" means.
I love Rage's music and have always accepted as much of their prophetic message (that religious thing again!) as my grain of salt permits.