Via David Henderson at Econlog. Citing someone else, via someone else’s Facebook:
All governments suffer a recurring problem: Power attracts pathological personalities. It is not that power corrupts but that it is magnetic to the corruptable. Such people have a tendency to become drunk on violence, a condition to which they are quickly addicted.
And from the Hayek classic, a right-wing favourite in warning against the dangers of socialism, and here, regarding the type of people who will obtain power in a totalitarian state:
… the probability of the people in power being individuals who would dislike the possession and exercise of power is on a level with the probability that an extremely tender-hearted person would get the job of whipping-master in a slave plantation.