Anarcho-tyranny is a concept, where the state is argued to be more interested in controlling citizens so that they do not oppose the managerial class (tyranny) rather than controlling real criminals (causing anarchy). Laws are argued to be enforced only selectively, depending on what is perceived to be beneficial for the ruling elite.
Latin, translation: "Thus always to tyrants", purportedly (but unlikely) uttered by Brutus at the assassination of Julius Caesar. The phrase is meant to signify that tyrants will always be overthrown and removed from power.
The other person who defined this just got it flat out wrong. Didn't think people could be that stupid.