Although the majority of PSNI officers are Ulster Protestants, this dominance is not as pronounced as it was in the RUC because of positive action policies. The RUC was a militarised police force and played a key role in policing the violent conflict known as the Troubles. As part of the Good Friday Agreement, there was an agreement to introduce a new police service initially based on the body of constables of the RUC. As part of the reform, an Independent Commission on Policing for Northern Ireland (the Patten Commission) was set up, and the RUC was replaced by the PSNI on 4 November 2001. The Police (Northern Ireland) Act 2000 named the new police service as the "Police Service of Northern Ireland (incorporating the Royal Ulster Constabulary)"; shortened to "Police Service of Northern Ireland" for operational purposes.