Archives New Zealand: the New Zealand government 'public service department' charged with 'the custody and preservation of the public archives of New Zealand' (from the Archives Act 1957). Formed in 2000 after the separation of National Archives from the Department of Internal Affairs.
... assumed power for any period of time without a legitimate basis of authority.
The first to have the title of "Tyrant" was Pisistratus in 560 BC.
In modern times ...