This Essay examines what the Harry Potter series (and particularly the most recent book, The Half-Blood Prince) tells us about government and bureaucracy. There are two short answers. The first is that Rowling presents a government (The Ministry of Magic) that is 100% bureaucracy. There is no discernable executive or legislative branch, and no elections. There is a modified judicial function, but it appears to be completely dominated by the bureaucracy, and certainly does not serve as an independent check on governmental excess.
Second, government is controlled by and for the benefit of the self-interested bureaucrat. The most cold-blooded public choice theorist could not present a bleaker portrait of a government captured by special interests and motivated solely by a desire to increase bureaucratic power and influence. Consider this partial list of government activities: a) torturing children for lying; b) utilizing a prison designed and staffed specifically to suck all life and hope out of the inmates; c) placing citizens in that prison without a hearing; d) allows the death penalty without a trial; e) allowing the powerful, rich or famous to control policy and practice; f) selective prosecution (the powerful go unpunished and the unpopular face trumped-up charges); g) conducting criminal trials without independent defense counsel; h) using truth serum to force confessions; i) maintaining constant surveillance over all citizens; j) allowing no elections whatsoever and no democratic lawmaking process; k) controlling the press.
And all I've got is e-wills. Meh.