Why keep trying to clean up corrupt political systems? Glenn Greenwald offers this advice:

[O]ne indisputable lesson that history teaches is that any structures built by human beings - no matter how formidable or invulnerable they may seem - can be radically altered, or even torn down and replaced, by other human beings who tap into passions and find the right strategy. So resignation - defeatism - is always irrational and baseless, even when it's tempting. I think the power of ideas is often underrated. Convincing fellow citizens to see and care about the problems you see and finding ways to persuade them to act is crucial. So is a willingness to sacrifice. And to create new ways of activism, even ones that people look askance at, rather than being wedded to the approved conventional means of political change (the ballot box). For reasons I alluded to above, putting fear (back) in the heart of those who wield power in the public and private sector is, to me, the key goal. A power elite that operates without fear of those over whom power is exercised is one that will be limitlessly corrupt and abusive.