I've always ended up with, and still reach the conclusion that there are only two tenable options which will work against a corrupt and unethical system.

1. Infiltrate, subvert, and implode the system from within (that's meant to be as Tzu-esque as it sounds).

2. Using parallel propaganda to get the public to realize that they have the ability to disable the system if they can collectively wield a moral, objective, and ethical compass (with all the McLuhan-esque difficulties that come with it).

I prefer the former. As dangerous as it is, I think it's strategically easier to wield covert action as a tool for effecting change than it is to attempt a unification of the masses. But, maybe a combination of both these approaches would be ideal.