"Government" itself does no harm, because it is a fictional entity. But the belief in "government"--the notion that some people actually have the moral right to rule over others--has caused immeasurable pain and suffering, injustice and oppression, enslavement and death. The fundamental problem does not reside in any set of buildings, or any group of politicians, or any gang of soldiers or enforcers. The fundamental problem is not an organization that can be voted out, or overthrown, or "reformed". The fundamental problem is the belief itself--the delusion, superstition, and myth of "authority"--which resides in the minds of several billion human beings.
How did I come to the conclusion?
Some of us realize the self-evident truth that no election, no constitution, no legislation, and no other pseudo-religious political ritual can bestow upon anyone the right to rule another. Nothing can make a man into a rightful master; nothing can make a man into a rightful slave.
To answer your question:
I figured out, via simple logic, that "government" is impossible. I don't mean that GOOD "government" is impossible (though it is); I mean that the entire concept of "government" is a self-contradictory myth. There's no such thing, and can be no such thing. There can NEVER be a legitimate ruling class, so arguing about WHAT KIND of ruling class we should have, or what it should do, was a completely pointless discussion. If "government" isn't real, debating what it should be like is silly.
There are several ways to prove this, and each of them is astonishingly simple. For example, if a person cannot delegate a right he doesn't have, then it is impossible for those in "government" to have any rights that I do not personally have. (Where and how would they have acquired such super-human rights?) Furthermore, unless human beings can actually ALTER morality by mere decree, then all "legislation" is pointless and illegitimate. If one accepts the principle of non-aggression, then "government" is logically impossible, because a "government" without the right to tax, regulate, or legislate (which are all threats of aggression) is no "government" at all. And just as no one can have the right to rule me, I can never have any obligation to obey anyone's command over my own "conscience," which rules out any possibility of any outside "authority."