Civil rights activists all over Northern Ireland soon launched a campaign of civil resistance. There was opposition from Loyalists, who were aided by the Royal Ulster Constabulary (RUC), Northern Ireland's police force. At this point, the RUC was over 90% Protestant. Violence escalated, resulting in the rise of the Provisional Irish Republican Army (IRA) from the Catholic community, a group reminiscent of those from the War of Independence and the Civil War that occurred in the 1920s that had launched a campaign of violence to end British rule in Northern Ireland. Loyalist paramilitaries countered this with a defensive campaign of violence and the British government responded with a policy of internment without trial of suspected IRA members. For more than 300 people, the internment lasted several years. The huge majority of those interned by the British forces were Catholic. In 1978, in a case brought by the government of the Republic of Ireland against the government of the United Kingdom, the European Court of Human Rights ruled that the interrogation techniques approved for use by the British army on internees in 1971 amounted to "inhuman and degrading" treatment.