The Collaborative International Dictionary of English v.0.48:

barbarization \barbarization\ n.
   1. the act or process of barbarizing; an act that makes
      people primitive and uncivilized.

   Syn: barbarisation.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

barbarization
    n 1: an act that makes people primitive and uncivilized [syn:
         barbarization, barbarisation]