Heh. Let me be less vague. The problem is the capture and control of elected officials by the entrenched bureaucracy and associated interests. It's a well-known problem. I am not aware of good non-bloody solutions.
Of course there is also the universal "power corrupts" which doesn't help.
What is something you used to believe, preferably something concrete with direct or implied predictions, that you now know was dead wrong. Was your belief rational given what you knew and could know back then, or was it irrational, and why?
Edit: I feel like some of these are getting a bit glib and political. Please try to explain what false assumptions or biases were underlying your beliefs - be introspective - this is LW after all.