Derrick Jensen

I had to post this video. How does one work within a destructive system to stop the destruction? He uses the allegory of doctors in a Nazi death camp to elaborate on the dilemma we face right now in terms of working within a destructive system. Recycling, composting, bicycling, food not lawns, etc. Is it really doing much good? The ecology movement has become a personal purity mission. How has this masked the real problems that we face?