Oh don't get me wrong, the government is not completely clean. My view though is the the vast majority of people involved with at the very least have good intentions with things aren't out to destroy the world for the sake of destroying the world.
Oh sure; government is what you make of it, after all... if you fill it with people who believe government is a force of compromise and collaborative power, then you have a good government. If, instead, it is comprised mostly of people who think government is going to be a bad thing, then it's going to be a bad thing, and they then get the benefit of pointing to it and saying 'See? What did I tell you!'
Still, concentrated resources mean concentrated power, and concentrated power will attract unwanted attention. This happens to any form of it. Government, Corporation, Military, Union. None of these constructs exist with the intent to do terrible things (the first two are largely constructive agencies and the latter two are defensive ones) but someone who wants to exploit a system for wealth or power will be drawn to them.
Military contractors who've institutionalized misappropriate and 'losing' investments somewhere out the back door. Improperly run government agencies. Unions forgetting who they represent. Corporations cannibalizing and murdering each other or otherwise fleecing the masses for the all important profit margin.
They petition one another for increased power and decreased responsibility, and the working stiff pays for it pretty much regardless of which is sitting atop the pile.
So no; government is not intrinsically bad... and right about now it's just about the only institution big enough to spar toe to toe with the recently 'crystallized' wealth given over to corporations and their CEOs (who went from 40:1 ceo|worker pay ratios just before reagan to 400+:1 ceo|worker pay ratios today, while benefits disappear, pay fails to keep up with inflation, and prices for products skyrocket.) But, given the presence of mass-media which makes it incredibly expensive for the average voter to even know your name, the only people getting elected (at least, in numbers large enough to matter) are those who are either already corrupt or willing to be corrupted.
Things are getting worse. We need things like WikiLeaks to poke holes in all of these institutions and remind them that they are not immune to scrutiny and oversight (as they seem to think they are, lately.)