Most of these ordinary safeguards of tyranny are said to have been instituted by Periander of Corinth, and also many such devices may be borrowed from the Persian empire. These are both the measures mentioned some time back to secure the safety of a tyranny as far as possible [including] . . . to set men at variance with one another and cause quarrels between friend and friend and between the people and the notables and among the rich . . ..
-- Aristotle, Politics, 5, 1313ab
Rule 13: Pick the target, freeze it, personalize it, polarize it.
-- Saul Alinsky, Rules for Radicals
