The Collaborative International Dictionary of English v.0.48:

animalisation \animalisation\ n.
   1. an act that makes people cruel or lacking normal human
      qualities.

   Syn: brutalization, brutalisation, animalization
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

animalisation
    n 1: an act that makes people cruel or lacking normal human
         qualities [syn: brutalization, brutalisation,
         animalization, animalisation]