Power depends ultimately on physical force. By teaching people that violence is wrong (except, of course, when the system itself uses violence via the police or the military), the system maintains its monopoly on physical force and thus keeps all power in its own hands.

Technological Slavery: The Collected Writings of Theodore J. Kaczynski, A.k.a. "The Unabomber" (ed. Feral House, 2010) - ISBN: 9781932595802