There's an aphorism that true power is never given, it is taken. If that's the case, it actually is entirely up to the oppressed to take power, and the most the people in power can do to support it is not stand in their way.
I don't think that's the best conclusion to draw. I'm taking that to mean that the oppressed can't just wait for the oppressors to wake up one day and realize they've been wrong all along. But I don't think it means we get to stand around and do nothing.