Ulsterisation refers to one part 'primacy of the police' Anthony Jennings, Justice Under Fire: The Abuse of Civil Liberties in Northern Ireland, Pluto Press 1990, ISBN 0-7453-0415-X, pg.192 of a three part strategyThe other two being "Normalisation" and "Criminalisation" by the British Government to pacify Northern Ireland during the conflict known as The Troubles.