Unlike some anarchist theorists I do not believe that all primordial human societies were leaderless anarchies, without cheiftains or authorities of any kind.
The early emergence of leaders of some kind seems quite common, if only by consent of the governed.
However I do believe that leaders should be questioned.
That said, I think people are naturally anarchistic in the sense that most people instinctively don't like being bossed around and like to have consensus.
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Anarchism means "I will not rule and I will not be ruled." This is a valid demand.